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Broadwell Server - Uncore Events

Microarchitectures

  • Intel® Xeon®Processor E5 v4 processor family
  • Events for Intel® microarchitecture code name Broadwell

Uncore Events

Event Name Description Programming Info
UNC_M_CLOCKTICKS Clockticks in the Memory Controller using a dedicated 48-bit Fixed Counter MSR_UNC_PERF_FIXED_CTR Fixed
UNC_U_CLOCKTICKS Clockticks in the UBOX using a dedicated 48-bit Fixed Counter MSR_UNC_PERF_FIXED_CTR Fixed
UNC_C_BOUNCE_CONTROL Bounce Control EventSel=0AH UMask=00H Counter=0,1,2,3
UNC_C_CLOCKTICKS Uncore Clocks EventSel=00H UMask=00H Counter=0,1,2,3
UNC_C_COUNTER0_OCCUPANCY Since occupancy counts can only be captured in the Cbo's 0 counter, this event allows a user to capture occupancy related information by filtering the Cb0 occupancy count captured in Counter 0. The filtering available is found in the control register - threshold, invert and edge detect. E.g. setting threshold to 1 can effectively monitor how many cycles the monitored queue has an entry. EventSel=1FH UMask=00H Counter=0,1,2,3
UNC_C_FAST_ASSERTED Counts the number of cycles either the local distress or incoming distress signals are asserted. Incoming distress includes both up and dn. EventSel=09H UMask=00H Counter=0,1
UNC_C_LLC_LOOKUP.ANY Counts the number of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. This has numerous filters available. Note the non-standard filtering equation. This event will count requests that lookup the cache multiple times with multiple increments. One must ALWAYS set umask bit 0 and select a state or states to match. Otherwise, the event will count nothing. CBoGlCtrl[22:18] bits correspond to [FMESI] state.; Filters for any transaction originating from the IPQ or IRQ. This does not include lookups originating from the ISMQ. EventSel=34H UMask=11H Counter=0,1,2,3
UNC_C_LLC_LOOKUP.DATA_READ Counts the number of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. This has numerous filters available. Note the non-standard filtering equation. This event will count requests that lookup the cache multiple times with multiple increments. One must ALWAYS set umask bit 0 and select a state or states to match. Otherwise, the event will count nothing. CBoGlCtrl[22:18] bits correspond to [FMESI] state.; Read transactions EventSel=34H UMask=03H Counter=0,1,2,3
UNC_C_LLC_LOOKUP.NID Counts the number of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. This has numerous filters available. Note the non-standard filtering equation. This event will count requests that lookup the cache multiple times with multiple increments. One must ALWAYS set umask bit 0 and select a state or states to match. Otherwise, the event will count nothing. CBoGlCtrl[22:18] bits correspond to [FMESI] state.; Qualify one of the other subevents by the Target NID. The NID is programmed in Cn_MSR_PMON_BOX_FILTER.nid. In conjunction with STATE = I, it is possible to monitor misses to specific NIDs in the system. EventSel=34H UMask=41H Counter=0,1,2,3
UNC_C_LLC_LOOKUP.READ Counts the number of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. This has numerous filters available. Note the non-standard filtering equation. This event will count requests that lookup the cache multiple times with multiple increments. One must ALWAYS set umask bit 0 and select a state or states to match. Otherwise, the event will count nothing. CBoGlCtrl[22:18] bits correspond to [FMESI] state.; Read transactions EventSel=34H UMask=21H Counter=0,1,2,3
UNC_C_LLC_LOOKUP.REMOTE_SNOOP Counts the number of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. This has numerous filters available. Note the non-standard filtering equation. This event will count requests that lookup the cache multiple times with multiple increments. One must ALWAYS set umask bit 0 and select a state or states to match. Otherwise, the event will count nothing. CBoGlCtrl[22:18] bits correspond to [FMESI] state.; Filters for only snoop requests coming from the remote socket(s) through the IPQ. EventSel=34H UMask=09H Counter=0,1,2,3
UNC_C_LLC_LOOKUP.WRITE Counts the number of times the LLC was accessed - this includes code, data, prefetches and hints coming from L2. This has numerous filters available. Note the non-standard filtering equation. This event will count requests that lookup the cache multiple times with multiple increments. One must ALWAYS set umask bit 0 and select a state or states to match. Otherwise, the event will count nothing. CBoGlCtrl[22:18] bits correspond to [FMESI] state.; Writeback transactions from L2 to the LLC This includes all write transactions -- both Cacheable and UC. EventSel=34H UMask=05H Counter=0,1,2,3
UNC_C_LLC_VICTIMS.E_STATE Counts the number of lines that were victimized on a fill. This can be filtered by the state that the line was in. EventSel=37H UMask=02H Counter=0,1,2,3
UNC_C_LLC_VICTIMS.F_STATE Counts the number of lines that were victimized on a fill. This can be filtered by the state that the line was in. EventSel=37H UMask=08H Counter=0,1,2,3
UNC_C_LLC_VICTIMS.I_STATE Counts the number of lines that were victimized on a fill. This can be filtered by the state that the line was in. EventSel=37H UMask=04H Counter=0,1,2,3
UNC_C_LLC_VICTIMS.M_STATE Counts the number of lines that were victimized on a fill. This can be filtered by the state that the line was in. EventSel=37H UMask=01H Counter=0,1,2,3
UNC_C_LLC_VICTIMS.MISS Counts the number of lines that were victimized on a fill. This can be filtered by the state that the line was in. EventSel=37H UMask=10H Counter=0,1,2,3
UNC_C_LLC_VICTIMS.NID Counts the number of lines that were victimized on a fill. This can be filtered by the state that the line was in.; Qualify one of the other subevents by the Target NID. The NID is programmed in Cn_MSR_PMON_BOX_FILTER.nid. In conjunction with STATE = I, it is possible to monitor misses to specific NIDs in the system. EventSel=37H UMask=40H Counter=0,1,2,3
UNC_C_MISC.CVZERO_PREFETCH_MISS Miscellaneous events in the Cbo. EventSel=39H UMask=20H Counter=0,1,2,3
UNC_C_MISC.CVZERO_PREFETCH_VICTIM Miscellaneous events in the Cbo. EventSel=39H UMask=10H Counter=0,1,2,3
UNC_C_MISC.RFO_HIT_S Miscellaneous events in the Cbo.; Number of times that an RFO hit in S state. This is useful for determining if it might be good for a workload to use RspIWB instead of RspSWB. EventSel=39H UMask=08H Counter=0,1,2,3
UNC_C_MISC.RSPI_WAS_FSE Miscellaneous events in the Cbo.; Counts the number of times when a Snoop hit in FSE states and triggered a silent eviction. This is useful because this information is lost in the PRE encodings. EventSel=39H UMask=01H Counter=0,1,2,3
UNC_C_MISC.STARTED Miscellaneous events in the Cbo. EventSel=39H UMask=04H Counter=0,1,2,3
UNC_C_MISC.WC_ALIASING Miscellaneous events in the Cbo.; Counts the number of times that a USWC write (WCIL(F)) transaction hit in the LLC in M state, triggering a WBMtoI followed by the USWC write. This occurs when there is WC aliasing. EventSel=39H UMask=02H Counter=0,1,2,3
UNC_C_QLRU.AGE0 How often age was set to 0 EventSel=3CH UMask=01H Counter=0,1,2,3
UNC_C_QLRU.AGE1 How often age was set to 1 EventSel=3CH UMask=02H Counter=0,1,2,3
UNC_C_QLRU.AGE2 How often age was set to 2 EventSel=3CH UMask=04H Counter=0,1,2,3
UNC_C_QLRU.AGE3 How often age was set to 3 EventSel=3CH UMask=08H Counter=0,1,2,3
UNC_C_QLRU.LRU_DECREMENT How often all LRU bits were decremented by 1 EventSel=3CH UMask=10H Counter=0,1,2,3
UNC_C_QLRU.VICTIM_NON_ZERO How often we picked a victim that had a non-zero age EventSel=3CH UMask=20H Counter=0,1,2,3
UNC_C_RING_AD_USED.ALL Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1BH UMask=0FH Counter=0,1,2,3
UNC_C_RING_AD_USED.DOWN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. We really have two rings in BDX-- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1BH UMask=0CH Counter=0,1,2,3
UNC_C_RING_AD_USED.DOWN_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Even ring polarity. EventSel=1BH UMask=04H Counter=0,1,2,3
UNC_C_RING_AD_USED.DOWN_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Odd ring polarity. EventSel=1BH UMask=08H Counter=0,1,2,3
UNC_C_RING_AD_USED.UP Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1BH UMask=03H Counter=0,1,2,3
UNC_C_RING_AD_USED.UP_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Even ring polarity. EventSel=1BH UMask=01H Counter=0,1,2,3
UNC_C_RING_AD_USED.UP_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Odd ring polarity. EventSel=1BH UMask=02H Counter=0,1,2,3
UNC_C_RING_AK_USED.ALL Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1CH UMask=0FH Counter=0,1,2,3
UNC_C_RING_AK_USED.DOWN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1CH UMask=0CH Counter=0,1,2,3
UNC_C_RING_AK_USED.DOWN_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Even ring polarity. EventSel=1CH UMask=04H Counter=0,1,2,3
UNC_C_RING_AK_USED.DOWN_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Odd ring polarity. EventSel=1CH UMask=08H Counter=0,1,2,3
UNC_C_RING_AK_USED.UP Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1CH UMask=03H Counter=0,1,2,3
UNC_C_RING_AK_USED.UP_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Even ring polarity. EventSel=1CH UMask=01H Counter=0,1,2,3
UNC_C_RING_AK_USED.UP_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Odd ring polarity. EventSel=1CH UMask=02H Counter=0,1,2,3
UNC_C_RING_BL_USED.ALL Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1DH UMask=0FH Counter=0,1,2,3
UNC_C_RING_BL_USED.DOWN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1DH UMask=0CH Counter=0,1,2,3
UNC_C_RING_BL_USED.DOWN_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Even ring polarity. EventSel=1DH UMask=04H Counter=0,1,2,3
UNC_C_RING_BL_USED.DOWN_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Odd ring polarity. EventSel=1DH UMask=08H Counter=0,1,2,3
UNC_C_RING_BL_USED.UP Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1DH UMask=03H Counter=0,1,2,3
UNC_C_RING_BL_USED.UP_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Even ring polarity. EventSel=1DH UMask=01H Counter=0,1,2,3
UNC_C_RING_BL_USED.UP_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Odd ring polarity. EventSel=1DH UMask=02H Counter=0,1,2,3
UNC_C_RING_BOUNCES.AD Number of LLC responses that bounced on the Ring.; AD EventSel=05H UMask=01H Counter=0,1,2,3
UNC_C_RING_BOUNCES.AK Number of LLC responses that bounced on the Ring.; AK EventSel=05H UMask=02H Counter=0,1,2,3
UNC_C_RING_BOUNCES.BL Number of LLC responses that bounced on the Ring.; BL EventSel=05H UMask=04H Counter=0,1,2,3
UNC_C_RING_BOUNCES.IV Number of LLC responses that bounced on the Ring.; Snoops of processor's cache. EventSel=05H UMask=10H Counter=0,1,2,3
UNC_C_RING_IV_USED.ANY Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. There is only 1 IV ring in BDX Therefore, if one wants to monitor the "Even" ring, they should select both UP_EVEN and DN_EVEN. To monitor the "Odd" ring, they should select both UP_ODD and DN_ODD.; Filters any polarity EventSel=1EH UMask=0FH Counter=0,1,2,3
UNC_C_RING_IV_USED.DN Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. There is only 1 IV ring in BDX Therefore, if one wants to monitor the "Even" ring, they should select both UP_EVEN and DN_EVEN. To monitor the "Odd" ring, they should select both UP_ODD and DN_ODD.; Filters any polarity EventSel=1EH UMask=0CH Counter=0,1,2,3
UNC_C_RING_IV_USED.DOWN Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. There is only 1 IV ring in BDX Therefore, if one wants to monitor the "Even" ring, they should select both UP_EVEN and DN_EVEN. To monitor the "Odd" ring, they should select both UP_ODD and DN_ODD.; Filters for Down polarity EventSel=1EH UMask=CCH Counter=0,1,2,3
UNC_C_RING_IV_USED.UP Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. There is only 1 IV ring in BDX Therefore, if one wants to monitor the "Even" ring, they should select both UP_EVEN and DN_EVEN. To monitor the "Odd" ring, they should select both UP_ODD and DN_ODD.; Filters any polarity EventSel=1EH UMask=03H Counter=0,1,2,3
UNC_C_RING_SINK_STARVED.AD AD EventSel=06H UMask=01H Counter=0,1,2,3
UNC_C_RING_SINK_STARVED.AK AK EventSel=06H UMask=02H Counter=0,1,2,3
UNC_C_RING_SINK_STARVED.BL BL EventSel=06H UMask=04H Counter=0,1,2,3
UNC_C_RING_SINK_STARVED.IV IV EventSel=06H UMask=08H Counter=0,1,2,3
UNC_C_RING_SRC_THRTL Number of cycles the Cbo is actively throttling traffic onto the Ring in order to limit bounce traffic. EventSel=07H UMask=00H Counter=0,1,2,3
UNC_C_RxR_EXT_STARVED.IPQ Counts cycles in external starvation. This occurs when one of the ingress queues is being starved by the other queues.; IPQ is externally starved and therefore we are blocking the IRQ. EventSel=12H UMask=02H Counter=0,1,2,3
UNC_C_RxR_EXT_STARVED.IRQ Counts cycles in external starvation. This occurs when one of the ingress queues is being starved by the other queues.; IRQ is externally starved and therefore we are blocking the IPQ. EventSel=12H UMask=01H Counter=0,1,2,3
UNC_C_RxR_EXT_STARVED.ISMQ_BIDS Counts cycles in external starvation. This occurs when one of the ingress queues is being starved by the other queues.; Number of times that the ISMQ Bid. EventSel=12H UMask=08H Counter=0,1,2,3
UNC_C_RxR_EXT_STARVED.PRQ Counts cycles in external starvation. This occurs when one of the ingress queues is being starved by the other queues. EventSel=12H UMask=04H Counter=0,1,2,3
UNC_C_RxR_INSERTS.IPQ Counts number of allocations per cycle into the specified Ingress queue. EventSel=13H UMask=04H Counter=0,1,2,3
UNC_C_RxR_INSERTS.IRQ Counts number of allocations per cycle into the specified Ingress queue. EventSel=13H UMask=01H Counter=0,1,2,3
UNC_C_RxR_INSERTS.IRQ_REJ Counts number of allocations per cycle into the specified Ingress queue. EventSel=13H UMask=02H Counter=0,1,2,3
UNC_C_RxR_INSERTS.PRQ Counts number of allocations per cycle into the specified Ingress queue. EventSel=13H UMask=10H Counter=0,1,2,3
UNC_C_RxR_INSERTS.PRQ_REJ Counts number of allocations per cycle into the specified Ingress queue. EventSel=13H UMask=20H Counter=0,1,2,3
UNC_C_RxR_INT_STARVED.IPQ Counts cycles in internal starvation. This occurs when one (or more) of the entries in the ingress queue are being starved out by other entries in that queue.; Cycles with the IPQ in Internal Starvation. EventSel=14H UMask=04H Counter=0,1,2,3
UNC_C_RxR_INT_STARVED.IRQ Counts cycles in internal starvation. This occurs when one (or more) of the entries in the ingress queue are being starved out by other entries in that queue.; Cycles with the IRQ in Internal Starvation. EventSel=14H UMask=01H Counter=0,1,2,3
UNC_C_RxR_INT_STARVED.ISMQ Counts cycles in internal starvation. This occurs when one (or more) of the entries in the ingress queue are being starved out by other entries in that queue.; Cycles with the ISMQ in Internal Starvation. EventSel=14H UMask=08H Counter=0,1,2,3
UNC_C_RxR_INT_STARVED.PRQ Counts cycles in internal starvation. This occurs when one (or more) of the entries in the ingress queue are being starved out by other entries in that queue. EventSel=14H UMask=10H Counter=0,1,2,3
UNC_C_RxR_IPQ_RETRY.ADDR_CONFLICT Number of times a snoop (probe) request had to retry. Filters exist to cover some of the common cases retries.; Counts the number of times that a request form the IPQ was retried because of a TOR reject from an address conflicts. Address conflicts out of the IPQ should be rare. They will generally only occur if two different sockets are sending requests to the same address at the same time. This is a true "conflict" case, unlike the IPQ Address Conflict which is commonly caused by prefetching characteristics. EventSel=31H UMask=04H Counter=0,1,2,3
UNC_C_RxR_IPQ_RETRY.ANY Number of times a snoop (probe) request had to retry. Filters exist to cover some of the common cases retries.; Counts the number of times that a request form the IPQ was retried because of a TOR reject. TOR rejects from the IPQ can be caused by the Egress being full or Address Conflicts. EventSel=31H UMask=01H Counter=0,1,2,3
UNC_C_RxR_IPQ_RETRY.FULL Number of times a snoop (probe) request had to retry. Filters exist to cover some of the common cases retries.; Counts the number of times that a request form the IPQ was retried because of a TOR reject from the Egress being full. IPQ requests make use of the AD Egress for regular responses, the BL egress to forward data, and the AK egress to return credits. EventSel=31H UMask=02H Counter=0,1,2,3
UNC_C_RxR_IPQ_RETRY.QPI_CREDITS Number of times a snoop (probe) request had to retry. Filters exist to cover some of the common cases retries. EventSel=31H UMask=10H Counter=0,1,2,3
UNC_C_RxR_IPQ_RETRY2.AD_SBO Number of times a snoop (probe) request had to retry. Filters exist to cover some of the common cases retries.; Counts the number of times that a request from the IPQ was retried because of it lacked credits to send an AD packet to the Sbo. EventSel=28H UMask=01H Counter=0,1,2,3
UNC_C_RxR_IPQ_RETRY2.TARGET Number of times a snoop (probe) request had to retry. Filters exist to cover some of the common cases retries.; Counts the number of times that a request from the IPQ was retried filtered by the Target NodeID as specified in the Cbox's Filter register. EventSel=28H UMask=40H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY.ADDR_CONFLICT Counts the number of times that a request from the IRQ was retried because of an address match in the TOR. In order to maintain coherency, requests to the same address are not allowed to pass each other up in the Cbo. Therefore, if there is an outstanding request to a given address, one cannot issue another request to that address until it is complete. This comes up most commonly with prefetches. Outstanding prefetches occasionally will not complete their memory fetch and a demand request to the same address will then sit in the IRQ and get retried until the prefetch fills the data into the LLC. Therefore, it will not be uncommon to see this case in high bandwidth streaming workloads when the LLC Prefetcher in the core is enabled. EventSel=32H UMask=04H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY.ANY Counts the number of IRQ retries that occur. Requests from the IRQ are retried if they are rejected from the TOR pipeline for a variety of reasons. Some of the most common reasons include if the Egress is full, there are no RTIDs, or there is a Physical Address match to another outstanding request. EventSel=32H UMask=01H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY.FULL Counts the number of times that a request from the IRQ was retried because it failed to acquire an entry in the Egress. The egress is the buffer that queues up for allocating onto the ring. IRQ requests can make use of all four rings and all four Egresses. If any of the queues that a given request needs to make use of are full, the request will be retried. EventSel=32H UMask=02H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY.IIO_CREDITS Number of times a request attempted to acquire the NCS/NCB credit for sending messages on BL to the IIO. There is a single credit in each CBo that is shared between the NCS and NCB message classes for sending transactions on the BL ring (such as read data) to the IIO. EventSel=32H UMask=20H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY.NID Qualify one of the other subevents by a given RTID destination NID. The NID is programmed in Cn_MSR_PMON_BOX_FILTER1.nid. EventSel=32H UMask=40H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY.QPI_CREDITS Number of requests rejects because of lack of QPI Ingress credits. These credits are required in order to send transactions to the QPI agent. Please see the QPI_IGR_CREDITS events for more information. EventSel=32H UMask=10H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY.RTID Counts the number of times that requests from the IRQ were retried because there were no RTIDs available. RTIDs are required after a request misses the LLC and needs to send snoops and/or requests to memory. If there are no RTIDs available, requests will queue up in the IRQ and retry until one becomes available. Note that there are multiple RTID pools for the different sockets. There may be cases where the local RTIDs are all used, but requests destined for remote memory can still acquire an RTID because there are remote RTIDs available. This event does not provide any filtering for this case. EventSel=32H UMask=08H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY2.AD_SBO Counts the number of times that a request from the IPQ was retried because of it lacked credits to send an AD packet to the Sbo. EventSel=29H UMask=01H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY2.BL_SBO Counts the number of times that a request from the IPQ was retried because of it lacked credits to send an BL packet to the Sbo. EventSel=29H UMask=02H Counter=0,1,2,3
UNC_C_RxR_IRQ_RETRY2.TARGET Counts the number of times that a request from the IPQ was retried filtered by the Target NodeID as specified in the Cbox's Filter register. EventSel=29H UMask=40H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY.ANY Number of times a transaction flowing through the ISMQ had to retry. Transaction pass through the ISMQ as responses for requests that already exist in the Cbo. Some examples include: when data is returned or when snoop responses come back from the cores.; Counts the total number of times that a request from the ISMQ retried because of a TOR reject. ISMQ requests generally will not need to retry (or at least ISMQ retries are less common than IRQ retries). ISMQ requests will retry if they are not able to acquire a needed Egress credit to get onto the ring, or for cache evictions that need to acquire an RTID. Most ISMQ requests already have an RTID, so eviction retries will be less common here. EventSel=33H UMask=01H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY.FULL Number of times a transaction flowing through the ISMQ had to retry. Transaction pass through the ISMQ as responses for requests that already exist in the Cbo. Some examples include: when data is returned or when snoop responses come back from the cores.; Counts the number of times that a request from the ISMQ retried because of a TOR reject caused by a lack of Egress credits. The egress is the buffer that queues up for allocating onto the ring. If any of the Egress queues that a given request needs to make use of are full, the request will be retried. EventSel=33H UMask=02H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY.IIO_CREDITS Number of times a transaction flowing through the ISMQ had to retry. Transaction pass through the ISMQ as responses for requests that already exist in the Cbo. Some examples include: when data is returned or when snoop responses come back from the cores.; Number of times a request attempted to acquire the NCS/NCB credit for sending messages on BL to the IIO. There is a single credit in each CBo that is shared between the NCS and NCB message classes for sending transactions on the BL ring (such as read data) to the IIO. EventSel=33H UMask=20H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY.NID Number of times a transaction flowing through the ISMQ had to retry. Transaction pass through the ISMQ as responses for requests that already exist in the Cbo. Some examples include: when data is returned or when snoop responses come back from the cores.; Qualify one of the other subevents by a given RTID destination NID. The NID is programmed in Cn_MSR_PMON_BOX_FILTER1.nid. EventSel=33H UMask=40H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY.QPI_CREDITS Number of times a transaction flowing through the ISMQ had to retry. Transaction pass through the ISMQ as responses for requests that already exist in the Cbo. Some examples include: when data is returned or when snoop responses come back from the cores. EventSel=33H UMask=10H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY.RTID Number of times a transaction flowing through the ISMQ had to retry. Transaction pass through the ISMQ as responses for requests that already exist in the Cbo. Some examples include: when data is returned or when snoop responses come back from the cores.; Counts the number of times that a request from the ISMQ retried because of a TOR reject caused by no RTIDs. M-state cache evictions are serviced through the ISMQ, and must acquire an RTID in order to write back to memory. If no RTIDs are available, they will be retried. EventSel=33H UMask=08H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY.WB_CREDITS Number of times a transaction flowing through the ISMQ had to retry. Transaction pass through the ISMQ as responses for requests that already exist in the Cbo. Some examples include: when data is returned or when snoop responses come back from the cores.; Qualify one of the other subevents by a given RTID destination NID. The NID is programmed in Cn_MSR_PMON_BOX_FILTER1.nid. EventSel=33H UMask=80H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY2.AD_SBO Counts the number of times that a request from the ISMQ was retried because of it lacked credits to send an AD packet to the Sbo. EventSel=2AH UMask=01H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY2.BL_SBO Counts the number of times that a request from the ISMQ was retried because of it lacked credits to send an BL packet to the Sbo. EventSel=2AH UMask=02H Counter=0,1,2,3
UNC_C_RxR_ISMQ_RETRY2.TARGET Counts the number of times that a request from the ISMQ was retried filtered by the Target NodeID as specified in the Cbox's Filter register. EventSel=2AH UMask=40H Counter=0,1,2,3
UNC_C_RxR_OCCUPANCY.IPQ Counts number of entries in the specified Ingress queue in each cycle. EventSel=11H UMask=04H Counter=0
UNC_C_RxR_OCCUPANCY.IRQ Counts number of entries in the specified Ingress queue in each cycle. EventSel=11H UMask=01H Counter=0
UNC_C_RxR_OCCUPANCY.IRQ_REJ Counts number of entries in the specified Ingress queue in each cycle. EventSel=11H UMask=02H Counter=0
UNC_C_RxR_OCCUPANCY.PRQ_REJ Counts number of entries in the specified Ingress queue in each cycle. EventSel=11H UMask=20H Counter=0
UNC_C_SBO_CREDIT_OCCUPANCY.AD Number of Sbo credits in use in a given cycle, per ring. Each Cbo is assigned an Sbo it can communicate with. EventSel=3EH UMask=01H Counter=0
UNC_C_SBO_CREDIT_OCCUPANCY.BL Number of Sbo credits in use in a given cycle, per ring. Each Cbo is assigned an Sbo it can communicate with. EventSel=3EH UMask=02H Counter=0
UNC_C_SBO_CREDITS_ACQUIRED.AD Number of Sbo credits acquired in a given cycle, per ring. Each Cbo is assigned an Sbo it can communicate with. EventSel=3DH UMask=01H Counter=0,1,2,3
UNC_C_SBO_CREDITS_ACQUIRED.BL Number of Sbo credits acquired in a given cycle, per ring. Each Cbo is assigned an Sbo it can communicate with. EventSel=3DH UMask=02H Counter=0,1,2,3
UNC_C_TOR_INSERTS.ALL Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; All transactions inserted into the TOR. This includes requests that reside in the TOR for a short time, such as LLC Hits that do not need to snoop cores or requests that get rejected and have to be retried through one of the ingress queues. The TOR is more commonly a bottleneck in skews with smaller core counts, where the ratio of RTIDs to TOR entries is larger. Note that there are reserved TOR entries for various request types, so it is possible that a given request type be blocked with an occupancy that is less than 20. Also note that generally requests will not be able to arbitrate into the TOR pipeline if there are no available TOR slots. EventSel=35H UMask=08H Counter=0,1,2,3
UNC_C_TOR_INSERTS.EVICTION Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Eviction transactions inserted into the TOR. Evictions can be quick, such as when the line is in the F, S, or E states and no core valid bits are set. They can also be longer if either CV bits are set (so the cores need to be snooped) and/or if there is a HitM (in which case it is necessary to write the request out to memory). EventSel=35H UMask=04H Counter=0,1,2,3
UNC_C_TOR_INSERTS.LOCAL Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; All transactions inserted into the TOR that are satisfied by locally HOMed memory. EventSel=35H UMask=28H Counter=0,1,2,3
UNC_C_TOR_INSERTS.LOCAL_OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; All transactions, satisfied by an opcode, inserted into the TOR that are satisfied by locally HOMed memory. EventSel=35H UMask=21H Counter=0,1,2,3
UNC_C_TOR_INSERTS.MISS_LOCAL Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Miss transactions inserted into the TOR that are satisfied by locally HOMed memory. EventSel=35H UMask=2AH Counter=0,1,2,3
UNC_C_TOR_INSERTS.MISS_LOCAL_OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Miss transactions, satisfied by an opcode, inserted into the TOR that are satisfied by locally HOMed memory. EventSel=35H UMask=23H Counter=0,1,2,3
UNC_C_TOR_INSERTS.MISS_OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Miss transactions inserted into the TOR that match an opcode. EventSel=35H UMask=03H Counter=0,1,2,3
UNC_C_TOR_INSERTS.MISS_REMOTE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Miss transactions inserted into the TOR that are satisfied by remote caches or remote memory. EventSel=35H UMask=8AH Counter=0,1,2,3
UNC_C_TOR_INSERTS.MISS_REMOTE_OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Miss transactions, satisfied by an opcode, inserted into the TOR that are satisfied by remote caches or remote memory. EventSel=35H UMask=83H Counter=0,1,2,3
UNC_C_TOR_INSERTS.NID_ALL Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; All NID matched (matches an RTID destination) transactions inserted into the TOR. The NID is programmed in Cn_MSR_PMON_BOX_FILTER.nid. In conjunction with STATE = I, it is possible to monitor misses to specific NIDs in the system. EventSel=35H UMask=48H Counter=0,1,2,3
UNC_C_TOR_INSERTS.NID_EVICTION Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; NID matched eviction transactions inserted into the TOR. EventSel=35H UMask=44H Counter=0,1,2,3
UNC_C_TOR_INSERTS.NID_MISS_ALL Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; All NID matched miss requests that were inserted into the TOR. EventSel=35H UMask=4AH Counter=0,1,2,3
UNC_C_TOR_INSERTS.NID_MISS_OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Miss transactions inserted into the TOR that match a NID and an opcode. EventSel=35H UMask=43H Counter=0,1,2,3
UNC_C_TOR_INSERTS.NID_OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Transactions inserted into the TOR that match a NID and an opcode. EventSel=35H UMask=41H Counter=0,1,2,3
UNC_C_TOR_INSERTS.NID_WB Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; NID matched write transactions inserted into the TOR. EventSel=35H UMask=50H Counter=0,1,2,3
UNC_C_TOR_INSERTS.OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Transactions inserted into the TOR that match an opcode (matched by Cn_MSR_PMON_BOX_FILTER.opc) EventSel=35H UMask=01H Counter=0,1,2,3
UNC_C_TOR_INSERTS.REMOTE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; All transactions inserted into the TOR that are satisfied by remote caches or remote memory. EventSel=35H UMask=88H Counter=0,1,2,3
UNC_C_TOR_INSERTS.REMOTE_OPCODE Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; All transactions, satisfied by an opcode, inserted into the TOR that are satisfied by remote caches or remote memory. EventSel=35H UMask=81H Counter=0,1,2,3
UNC_C_TOR_INSERTS.WB Counts the number of entries successfully inserted into the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182).; Write transactions inserted into the TOR. This does not include "RFO", but actual operations that contain data being sent from the core. EventSel=35H UMask=10H Counter=0,1,2,3
UNC_C_TOR_OCCUPANCY.ALL For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); All valid TOR entries. This includes requests that reside in the TOR for a short time, such as LLC Hits that do not need to snoop cores or requests that get rejected and have to be retried through one of the ingress queues. The TOR is more commonly a bottleneck in skews with smaller core counts, where the ratio of RTIDs to TOR entries is larger. Note that there are reserved TOR entries for various request types, so it is possible that a given request type be blocked with an occupancy that is less than 20. Also note that generally requests will not be able to arbitrate into the TOR pipeline if there are no available TOR slots. EventSel=36H UMask=08H Counter=0
UNC_C_TOR_OCCUPANCY.EVICTION For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding eviction transactions in the TOR. Evictions can be quick, such as when the line is in the F, S, or E states and no core valid bits are set. They can also be longer if either CV bits are set (so the cores need to be snooped) and/or if there is a HitM (in which case it is necessary to write the request out to memory). EventSel=36H UMask=04H Counter=0
UNC_C_TOR_OCCUPANCY.LOCAL For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182) EventSel=36H UMask=28H Counter=0
UNC_C_TOR_OCCUPANCY.LOCAL_OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding transactions, satisfied by an opcode, in the TOR that are satisfied by locally HOMed memory. EventSel=36H UMask=21H Counter=0
UNC_C_TOR_OCCUPANCY.MISS_ALL For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding miss requests in the TOR. 'Miss' means the allocation requires an RTID. This generally means that the request was sent to memory or MMIO. EventSel=36H UMask=0AH Counter=0
UNC_C_TOR_OCCUPANCY.MISS_LOCAL For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182) EventSel=36H UMask=2AH Counter=0
UNC_C_TOR_OCCUPANCY.MISS_LOCAL_OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding Miss transactions, satisfied by an opcode, in the TOR that are satisfied by locally HOMed memory. EventSel=36H UMask=23H Counter=0
UNC_C_TOR_OCCUPANCY.MISS_OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); TOR entries for miss transactions that match an opcode. This generally means that the request was sent to memory or MMIO. EventSel=36H UMask=03H Counter=0
UNC_C_TOR_OCCUPANCY.MISS_REMOTE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182) EventSel=36H UMask=8AH Counter=0
UNC_C_TOR_OCCUPANCY.MISS_REMOTE_OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding Miss transactions, satisfied by an opcode, in the TOR that are satisfied by remote caches or remote memory. EventSel=36H UMask=83H Counter=0
UNC_C_TOR_OCCUPANCY.NID_ALL For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of NID matched outstanding requests in the TOR. The NID is programmed in Cn_MSR_PMON_BOX_FILTER.nid.In conjunction with STATE = I, it is possible to monitor misses to specific NIDs in the system. EventSel=36H UMask=48H Counter=0
UNC_C_TOR_OCCUPANCY.NID_EVICTION For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding NID matched eviction transactions in the TOR . EventSel=36H UMask=44H Counter=0
UNC_C_TOR_OCCUPANCY.NID_MISS_ALL For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding Miss requests in the TOR that match a NID. EventSel=36H UMask=4AH Counter=0
UNC_C_TOR_OCCUPANCY.NID_MISS_OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding Miss requests in the TOR that match a NID and an opcode. EventSel=36H UMask=43H Counter=0
UNC_C_TOR_OCCUPANCY.NID_OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); TOR entries that match a NID and an opcode. EventSel=36H UMask=41H Counter=0
UNC_C_TOR_OCCUPANCY.NID_WB For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); NID matched write transactions int the TOR. EventSel=36H UMask=50H Counter=0
UNC_C_TOR_OCCUPANCY.OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); TOR entries that match an opcode (matched by Cn_MSR_PMON_BOX_FILTER.opc). EventSel=36H UMask=01H Counter=0
UNC_C_TOR_OCCUPANCY.REMOTE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182) EventSel=36H UMask=88H Counter=0
UNC_C_TOR_OCCUPANCY.REMOTE_OPCODE For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Number of outstanding transactions, satisfied by an opcode, in the TOR that are satisfied by remote caches or remote memory. EventSel=36H UMask=81H Counter=0
UNC_C_TOR_OCCUPANCY.WB For each cycle, this event accumulates the number of valid entries in the TOR that match qualifications specified by the subevent. There are a number of subevent 'filters' but only a subset of the subevent combinations are valid. Subevents that require an opcode or NID match require the Cn_MSR_PMON_BOX_FILTER.{opc, nid} field to be set. If, for example, one wanted to count DRD Local Misses, one should select "MISS_OPC_MATCH" and set Cn_MSR_PMON_BOX_FILTER.opc to DRD (0x182); Write transactions in the TOR. This does not include "RFO", but actual operations that contain data being sent from the core. EventSel=36H UMask=10H Counter=0
UNC_C_TxR_ADS_USED.AD Onto AD Ring EventSel=04H UMask=01H Counter=0,1,2,3
UNC_C_TxR_ADS_USED.AK Onto AK Ring EventSel=04H UMask=02H Counter=0,1,2,3
UNC_C_TxR_ADS_USED.BL Onto BL Ring EventSel=04H UMask=04H Counter=0,1,2,3
UNC_C_TxR_INSERTS.AD_CACHE Number of allocations into the Cbo Egress. The Egress is used to queue up requests destined for the ring.; Ring transactions from the Cachebo destined for the AD ring. Some example include outbound requests, snoop requests, and snoop responses. EventSel=02H UMask=01H Counter=0,1,2,3
UNC_C_TxR_INSERTS.AD_CORE Number of allocations into the Cbo Egress. The Egress is used to queue up requests destined for the ring.; Ring transactions from the Corebo destined for the AD ring. This is commonly used for outbound requests. EventSel=02H UMask=10H Counter=0,1,2,3
UNC_C_TxR_INSERTS.AK_CACHE Number of allocations into the Cbo Egress. The Egress is used to queue up requests destined for the ring.; Ring transactions from the Cachebo destined for the AK ring. This is commonly used for credit returns and GO responses. EventSel=02H UMask=02H Counter=0,1,2,3
UNC_C_TxR_INSERTS.AK_CORE Number of allocations into the Cbo Egress. The Egress is used to queue up requests destined for the ring.; Ring transactions from the Corebo destined for the AK ring. This is commonly used for snoop responses coming from the core and destined for a Cachebo. EventSel=02H UMask=20H Counter=0,1,2,3
UNC_C_TxR_INSERTS.BL_CACHE Number of allocations into the Cbo Egress. The Egress is used to queue up requests destined for the ring.; Ring transactions from the Cachebo destined for the BL ring. This is commonly used to send data from the cache to various destinations. EventSel=02H UMask=04H Counter=0,1,2,3
UNC_C_TxR_INSERTS.BL_CORE Number of allocations into the Cbo Egress. The Egress is used to queue up requests destined for the ring.; Ring transactions from the Corebo destined for the BL ring. This is commonly used for transferring writeback data to the cache. EventSel=02H UMask=40H Counter=0,1,2,3
UNC_C_TxR_INSERTS.IV_CACHE Number of allocations into the Cbo Egress. The Egress is used to queue up requests destined for the ring.; Ring transactions from the Cachebo destined for the IV ring. This is commonly used for snoops to the cores. EventSel=02H UMask=08H Counter=0,1,2,3
UNC_C_TxR_STARVED.AD_CORE Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time.; cycles that the core AD egress spent in starvation EventSel=03H UMask=10H Counter=0,1,2,3
UNC_C_TxR_STARVED.AK_BOTH Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time.; cycles that both AK egresses spent in starvation EventSel=03H UMask=02H Counter=0,1,2,3
UNC_C_TxR_STARVED.BL_BOTH Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time.; cycles that both BL egresses spent in starvation EventSel=03H UMask=04H Counter=0,1,2,3
UNC_C_TxR_STARVED.IV Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time.; cycles that the cachebo IV egress spent in starvation EventSel=03H UMask=08H Counter=0,1,2,3
UNC_H_ADDR_OPC_MATCH.AD QPI Address/Opcode Match; AD Opcodes EventSel=20H UMask=04H Counter=0,1,2,3
UNC_H_ADDR_OPC_MATCH.ADDR QPI Address/Opcode Match; Address EventSel=20H UMask=01H Counter=0,1,2,3
UNC_H_ADDR_OPC_MATCH.AK QPI Address/Opcode Match; AK Opcodes EventSel=20H UMask=10H Counter=0,1,2,3
UNC_H_ADDR_OPC_MATCH.BL QPI Address/Opcode Match; BL Opcodes EventSel=20H UMask=08H Counter=0,1,2,3
UNC_H_ADDR_OPC_MATCH.FILT QPI Address/Opcode Match; Address & Opcode Match EventSel=20H UMask=03H Counter=0,1,2,3
UNC_H_ADDR_OPC_MATCH.OPC QPI Address/Opcode Match; Opcode EventSel=20H UMask=02H Counter=0,1,2,3
UNC_H_BT_CYCLES_NE Cycles the Backup Tracker (BT) is not empty. The BT is the actual HOM tracker in IVT. EventSel=42H UMask=00H Counter=0,1,2,3
UNC_H_BT_TO_HT_NOT_ISSUED.INCOMING_BL_HAZARD Counts the number of cycles when the HA does not issue transaction from BT to HT.; Cycles unable to issue from BT due to incoming BL data hazard EventSel=51H UMask=04H Counter=0,1,2,3
UNC_H_BT_TO_HT_NOT_ISSUED.INCOMING_SNP_HAZARD Counts the number of cycles when the HA does not issue transaction from BT to HT.; Cycles unable to issue from BT due to incoming snoop hazard EventSel=51H UMask=02H Counter=0,1,2,3
UNC_H_BT_TO_HT_NOT_ISSUED.RSPACKCFLT_HAZARD Counts the number of cycles when the HA does not issue transaction from BT to HT.; Cycles unable to issue from BT due to incoming BL data hazard EventSel=51H UMask=08H Counter=0,1,2,3
UNC_H_BT_TO_HT_NOT_ISSUED.WBMDATA_HAZARD Counts the number of cycles when the HA does not issue transaction from BT to HT.; Cycles unable to issue from BT due to incoming BL data hazard EventSel=51H UMask=10H Counter=0,1,2,3
UNC_H_BYPASS_IMC.NOT_TAKEN Counts the number of times when the HA was able to bypass was attempted. This is a latency optimization for situations when there is light loadings on the memory subsystem. This can be filtered by when the bypass was taken and when it was not.; Filter for transactions that could not take the bypass. EventSel=14H UMask=02H Counter=0,1,2,3
UNC_H_BYPASS_IMC.TAKEN Counts the number of times when the HA was able to bypass was attempted. This is a latency optimization for situations when there is light loadings on the memory subsystem. This can be filtered by when the bypass was taken and when it was not.; Filter for transactions that succeeded in taking the bypass. EventSel=14H UMask=01H Counter=0,1,2,3
UNC_H_CLOCKTICKS Counts the number of uclks in the HA. This will be slightly different than the count in the Ubox because of enable/freeze delays. The HA is on the other side of the die from the fixed Ubox uclk counter, so the drift could be somewhat larger than in units that are closer like the QPI Agent. EventSel=00H UMask=00H Counter=0,1,2,3
UNC_H_DIRECT2CORE_COUNT Number of Direct2Core messages sent EventSel=11H UMask=00H Counter=0,1,2,3
UNC_H_DIRECT2CORE_CYCLES_DISABLED Number of cycles in which Direct2Core was disabled EventSel=12H UMask=00H Counter=0,1,2,3
UNC_H_DIRECT2CORE_TXN_OVERRIDE Number of Reads where Direct2Core overridden EventSel=13H UMask=00H Counter=0,1,2,3
UNC_H_DIRECTORY_LAT_OPT Directory Latency Optimization Data Return Path Taken. When directory mode is enabled and the directory returned for a read is Dir=I, then data can be returned using a faster path if certain conditions are met (credits, free pipeline, etc). EventSel=41H UMask=00H Counter=0,1,2,3
UNC_H_DIRECTORY_LOOKUP.NO_SNP Counts the number of transactions that looked up the directory. Can be filtered by requests that had to snoop and those that did not have to.; Filters for transactions that did not have to send any snoops because the directory bit was clear. EventSel=0CH UMask=02H Counter=0,1,2,3
UNC_H_DIRECTORY_LOOKUP.SNP Counts the number of transactions that looked up the directory. Can be filtered by requests that had to snoop and those that did not have to.; Filters for transactions that had to send one or more snoops because the directory bit was set. EventSel=0CH UMask=01H Counter=0,1,2,3
UNC_H_DIRECTORY_UPDATE.ANY Counts the number of directory updates that were required. These result in writes to the memory controller. This can be filtered by directory sets and directory clears. EventSel=0DH UMask=03H Counter=0,1,2,3
UNC_H_DIRECTORY_UPDATE.CLEAR Counts the number of directory updates that were required. These result in writes to the memory controller. This can be filtered by directory sets and directory clears.; Filter for directory clears. This occurs when snoops were sent and all returned with RspI. EventSel=0DH UMask=02H Counter=0,1,2,3
UNC_H_DIRECTORY_UPDATE.SET Counts the number of directory updates that were required. These result in writes to the memory controller. This can be filtered by directory sets and directory clears.; Filter for directory sets. This occurs when a remote read transaction requests memory, bringing it to a remote cache. EventSel=0DH UMask=01H Counter=0,1,2,3
UNC_H_HITME_HIT.ACKCNFLTWBI Counts Number of Hits in HitMe Cache; op is AckCnfltWbI EventSel=71H UMask=04H Counter=0,1,2,3
UNC_H_HITME_HIT.ALL Counts Number of Hits in HitMe Cache; All Requests EventSel=71H UMask=FFH Counter=0,1,2,3
UNC_H_HITME_HIT.ALLOCS Counts Number of Hits in HitMe Cache; Allocations EventSel=71H UMask=70H Counter=0,1,2,3
UNC_H_HITME_HIT.EVICTS Counts Number of Hits in HitMe Cache; Allocations EventSel=71H UMask=42H Counter=0,1,2,3
UNC_H_HITME_HIT.HOM Counts Number of Hits in HitMe Cache; HOM Requests EventSel=71H UMask=0FH Counter=0,1,2,3
UNC_H_HITME_HIT.INVALS Counts Number of Hits in HitMe Cache; Invalidations EventSel=71H UMask=26H Counter=0,1,2,3
UNC_H_HITME_HIT.READ_OR_INVITOE Counts Number of Hits in HitMe Cache; op is RdCode, RdData, RdDataMigratory, RdInvOwn, RdCur or InvItoE EventSel=71H UMask=01H Counter=0,1,2,3
UNC_H_HITME_HIT.RSP Counts Number of Hits in HitMe Cache; op is RspI, RspIWb, RspS, RspSWb, RspCnflt or RspCnfltWbI EventSel=71H UMask=80H Counter=0,1,2,3
UNC_H_HITME_HIT.RSPFWDI_LOCAL Counts Number of Hits in HitMe Cache; op is RspIFwd or RspIFwdWb for a local request EventSel=71H UMask=20H Counter=0,1,2,3
UNC_H_HITME_HIT.RSPFWDI_REMOTE Counts Number of Hits in HitMe Cache; op is RspIFwd or RspIFwdWb for a remote request EventSel=71H UMask=10H Counter=0,1,2,3
UNC_H_HITME_HIT.RSPFWDS Counts Number of Hits in HitMe Cache; op is RsSFwd or RspSFwdWb EventSel=71H UMask=40H Counter=0,1,2,3
UNC_H_HITME_HIT.WBMTOE_OR_S Counts Number of Hits in HitMe Cache; op is WbMtoE or WbMtoS EventSel=71H UMask=08H Counter=0,1,2,3
UNC_H_HITME_HIT.WBMTOI Counts Number of Hits in HitMe Cache; op is WbMtoI EventSel=71H UMask=02H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.ACKCNFLTWBI Accumulates Number of PV bits set on HitMe Cache Hits; op is AckCnfltWbI EventSel=72H UMask=04H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.ALL Accumulates Number of PV bits set on HitMe Cache Hits; All Requests EventSel=72H UMask=FFH Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.HOM Accumulates Number of PV bits set on HitMe Cache Hits; HOM Requests EventSel=72H UMask=0FH Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.READ_OR_INVITOE Accumulates Number of PV bits set on HitMe Cache Hits; op is RdCode, RdData, RdDataMigratory, RdInvOwn, RdCur or InvItoE EventSel=72H UMask=01H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.RSP Accumulates Number of PV bits set on HitMe Cache Hits; op is RspI, RspIWb, RspS, RspSWb, RspCnflt or RspCnfltWbI EventSel=72H UMask=80H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.RSPFWDI_LOCAL Accumulates Number of PV bits set on HitMe Cache Hits; op is RspIFwd or RspIFwdWb for a local request EventSel=72H UMask=20H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.RSPFWDI_REMOTE Accumulates Number of PV bits set on HitMe Cache Hits; op is RspIFwd or RspIFwdWb for a remote request EventSel=72H UMask=10H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.RSPFWDS Accumulates Number of PV bits set on HitMe Cache Hits; op is RsSFwd or RspSFwdWb EventSel=72H UMask=40H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.WBMTOE_OR_S Accumulates Number of PV bits set on HitMe Cache Hits; op is WbMtoE or WbMtoS EventSel=72H UMask=08H Counter=0,1,2,3
UNC_H_HITME_HIT_PV_BITS_SET.WBMTOI Accumulates Number of PV bits set on HitMe Cache Hits; op is WbMtoI EventSel=72H UMask=02H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.ACKCNFLTWBI Counts Number of times HitMe Cache is accessed; op is AckCnfltWbI EventSel=70H UMask=04H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.ALL Counts Number of times HitMe Cache is accessed; All Requests EventSel=70H UMask=FFH Counter=0,1,2,3
UNC_H_HITME_LOOKUP.ALLOCS Counts Number of times HitMe Cache is accessed; Allocations EventSel=70H UMask=70H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.HOM Counts Number of times HitMe Cache is accessed; HOM Requests EventSel=70H UMask=0FH Counter=0,1,2,3
UNC_H_HITME_LOOKUP.INVALS Counts Number of times HitMe Cache is accessed; Invalidations EventSel=70H UMask=26H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.READ_OR_INVITOE Counts Number of times HitMe Cache is accessed; op is RdCode, RdData, RdDataMigratory, RdInvOwn, RdCur or InvItoE EventSel=70H UMask=01H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.RSP Counts Number of times HitMe Cache is accessed; op is RspI, RspIWb, RspS, RspSWb, RspCnflt or RspCnfltWbI EventSel=70H UMask=80H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.RSPFWDI_LOCAL Counts Number of times HitMe Cache is accessed; op is RspIFwd or RspIFwdWb for a local request EventSel=70H UMask=20H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.RSPFWDI_REMOTE Counts Number of times HitMe Cache is accessed; op is RspIFwd or RspIFwdWb for a remote request EventSel=70H UMask=10H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.RSPFWDS Counts Number of times HitMe Cache is accessed; op is RsSFwd or RspSFwdWb EventSel=70H UMask=40H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.WBMTOE_OR_S Counts Number of times HitMe Cache is accessed; op is WbMtoE or WbMtoS EventSel=70H UMask=08H Counter=0,1,2,3
UNC_H_HITME_LOOKUP.WBMTOI Counts Number of times HitMe Cache is accessed; op is WbMtoI EventSel=70H UMask=02H Counter=0,1,2,3
UNC_H_IGR_NO_CREDIT_CYCLES.AD_QPI0 Counts the number of cycles when the HA does not have credits to send messages to the QPI Agent. This can be filtered by the different credit pools and the different links. EventSel=22H UMask=01H Counter=0,1,2,3
UNC_H_IGR_NO_CREDIT_CYCLES.AD_QPI1 Counts the number of cycles when the HA does not have credits to send messages to the QPI Agent. This can be filtered by the different credit pools and the different links. EventSel=22H UMask=02H Counter=0,1,2,3
UNC_H_IGR_NO_CREDIT_CYCLES.AD_QPI2 Counts the number of cycles when the HA does not have credits to send messages to the QPI Agent. This can be filtered by the different credit pools and the different links. EventSel=22H UMask=10H Counter=0,1,2,3
UNC_H_IGR_NO_CREDIT_CYCLES.BL_QPI0 Counts the number of cycles when the HA does not have credits to send messages to the QPI Agent. This can be filtered by the different credit pools and the different links. EventSel=22H UMask=04H Counter=0,1,2,3
UNC_H_IGR_NO_CREDIT_CYCLES.BL_QPI1 Counts the number of cycles when the HA does not have credits to send messages to the QPI Agent. This can be filtered by the different credit pools and the different links. EventSel=22H UMask=08H Counter=0,1,2,3
UNC_H_IGR_NO_CREDIT_CYCLES.BL_QPI2 Counts the number of cycles when the HA does not have credits to send messages to the QPI Agent. This can be filtered by the different credit pools and the different links. EventSel=22H UMask=20H Counter=0,1,2,3
UNC_H_IMC_READS.NORMAL Count of the number of reads issued to any of the memory controller channels. This can be filtered by the priority of the reads. EventSel=17H UMask=01H Counter=0,1,2,3
UNC_H_IMC_RETRY Retry Events EventSel=1EH UMask=00H Counter=0,1,2,3
UNC_H_IMC_WRITES.ALL Counts the total number of full line writes issued from the HA into the memory controller. This counts for all four channels. It can be filtered by full/partial and ISOCH/non-ISOCH. EventSel=1AH UMask=0FH Counter=0,1,2,3
UNC_H_IMC_WRITES.FULL Counts the total number of full line writes issued from the HA into the memory controller. This counts for all four channels. It can be filtered by full/partial and ISOCH/non-ISOCH. EventSel=1AH UMask=01H Counter=0,1,2,3
UNC_H_IMC_WRITES.FULL_ISOCH Counts the total number of full line writes issued from the HA into the memory controller. This counts for all four channels. It can be filtered by full/partial and ISOCH/non-ISOCH. EventSel=1AH UMask=04H Counter=0,1,2,3
UNC_H_IMC_WRITES.PARTIAL Counts the total number of full line writes issued from the HA into the memory controller. This counts for all four channels. It can be filtered by full/partial and ISOCH/non-ISOCH. EventSel=1AH UMask=02H Counter=0,1,2,3
UNC_H_IMC_WRITES.PARTIAL_ISOCH Counts the total number of full line writes issued from the HA into the memory controller. This counts for all four channels. It can be filtered by full/partial and ISOCH/non-ISOCH. EventSel=1AH UMask=08H Counter=0,1,2,3
UNC_H_IOT_BACKPRESSURE.HUB IOT Backpressure EventSel=61H UMask=02H Counter=0,1,2
UNC_H_IOT_BACKPRESSURE.SAT IOT Backpressure EventSel=61H UMask=01H Counter=0,1,2
UNC_H_IOT_CTS_EAST_LO.CTS0 Debug Mask/Match Tie-Ins EventSel=64H UMask=01H Counter=0,1,2
UNC_H_IOT_CTS_EAST_LO.CTS1 Debug Mask/Match Tie-Ins EventSel=64H UMask=02H Counter=0,1,2
UNC_H_IOT_CTS_HI.CTS2 Debug Mask/Match Tie-Ins EventSel=65H UMask=01H Counter=0,1,2
UNC_H_IOT_CTS_HI.CTS3 Debug Mask/Match Tie-Ins EventSel=65H UMask=02H Counter=0,1,2
UNC_H_IOT_CTS_WEST_LO.CTS0 Debug Mask/Match Tie-Ins EventSel=62H UMask=01H Counter=0,1,2
UNC_H_IOT_CTS_WEST_LO.CTS1 Debug Mask/Match Tie-Ins EventSel=62H UMask=02H Counter=0,1,2
UNC_H_OSB.CANCELLED Count of OSB snoop broadcasts. Counts by 1 per request causing OSB snoops to be broadcast. Does not count all the snoops generated by OSB.; OSB Snoop broadcast cancelled due to D2C or Other. OSB cancel is counted when OSB local read is not allowed even when the transaction in local InItoE. It also counts D2C OSB cancel, but also includes the cases were D2C was not set in the first place for the transaction coming from the ring. EventSel=53H UMask=10H Counter=0,1,2,3
UNC_H_OSB.INVITOE_LOCAL Count of OSB snoop broadcasts. Counts by 1 per request causing OSB snoops to be broadcast. Does not count all the snoops generated by OSB. EventSel=53H UMask=04H Counter=0,1,2,3
UNC_H_OSB.READS_LOCAL Count of OSB snoop broadcasts. Counts by 1 per request causing OSB snoops to be broadcast. Does not count all the snoops generated by OSB. EventSel=53H UMask=02H Counter=0,1,2,3
UNC_H_OSB.READS_LOCAL_USEFUL Count of OSB snoop broadcasts. Counts by 1 per request causing OSB snoops to be broadcast. Does not count all the snoops generated by OSB. EventSel=53H UMask=20H Counter=0,1,2,3
UNC_H_OSB.REMOTE Count of OSB snoop broadcasts. Counts by 1 per request causing OSB snoops to be broadcast. Does not count all the snoops generated by OSB. EventSel=53H UMask=08H Counter=0,1,2,3
UNC_H_OSB.REMOTE_USEFUL Count of OSB snoop broadcasts. Counts by 1 per request causing OSB snoops to be broadcast. Does not count all the snoops generated by OSB. EventSel=53H UMask=40H Counter=0,1,2,3
UNC_H_OSB_EDR.ALL Counts the number of transactions that broadcast snoop due to OSB, but found clean data in memory and was able to do early data return EventSel=54H UMask=01H Counter=0,1,2,3
UNC_H_OSB_EDR.READS_LOCAL_I Counts the number of transactions that broadcast snoop due to OSB, but found clean data in memory and was able to do early data return EventSel=54H UMask=02H Counter=0,1,2,3
UNC_H_OSB_EDR.READS_LOCAL_S Counts the number of transactions that broadcast snoop due to OSB, but found clean data in memory and was able to do early data return EventSel=54H UMask=08H Counter=0,1,2,3
UNC_H_OSB_EDR.READS_REMOTE_I Counts the number of transactions that broadcast snoop due to OSB, but found clean data in memory and was able to do early data return EventSel=54H UMask=04H Counter=0,1,2,3
UNC_H_OSB_EDR.READS_REMOTE_S Counts the number of transactions that broadcast snoop due to OSB, but found clean data in memory and was able to do early data return EventSel=54H UMask=10H Counter=0,1,2,3
UNC_H_REQUESTS.INVITOE_LOCAL Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; This filter includes only InvItoEs coming from the local socket. EventSel=01H UMask=10H Counter=0,1,2,3
UNC_H_REQUESTS.INVITOE_REMOTE Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; This filter includes only InvItoEs coming from remote sockets. EventSel=01H UMask=20H Counter=0,1,2,3
UNC_H_REQUESTS.READS Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; Incoming ead requests. This is a good proxy for LLC Read Misses (including RFOs). EventSel=01H UMask=03H Counter=0,1,2,3
UNC_H_REQUESTS.READS_LOCAL Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; This filter includes only read requests coming from the local socket. This is a good proxy for LLC Read Misses (including RFOs) from the local socket. EventSel=01H UMask=01H Counter=0,1,2,3
UNC_H_REQUESTS.READS_REMOTE Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; This filter includes only read requests coming from the remote socket. This is a good proxy for LLC Read Misses (including RFOs) from the remote socket. EventSel=01H UMask=02H Counter=0,1,2,3
UNC_H_REQUESTS.WRITES Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; Incoming write requests. EventSel=01H UMask=0CH Counter=0,1,2,3
UNC_H_REQUESTS.WRITES_LOCAL Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; This filter includes only writes coming from the local socket. EventSel=01H UMask=04H Counter=0,1,2,3
UNC_H_REQUESTS.WRITES_REMOTE Counts the total number of read requests made into the Home Agent. Reads include all read opcodes (including RFO). Writes include all writes (streaming, evictions, HitM, etc).; This filter includes only writes coming from remote sockets. EventSel=01H UMask=08H Counter=0,1,2,3
UNC_H_RING_AD_USED.CCW Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=3EH UMask=0CH Counter=0,1,2,3
UNC_H_RING_AD_USED.CCW_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=3EH UMask=04H Counter=0,1,2,3
UNC_H_RING_AD_USED.CCW_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=3EH UMask=08H Counter=0,1,2,3
UNC_H_RING_AD_USED.CW Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=3EH UMask=03H Counter=0,1,2,3
UNC_H_RING_AD_USED.CW_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=3EH UMask=01H Counter=0,1,2,3
UNC_H_RING_AD_USED.CW_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=3EH UMask=02H Counter=0,1,2,3
UNC_H_RING_AK_USED.ALL Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=3FH UMask=0FH Counter=0,1,2,3
UNC_H_RING_AK_USED.CCW Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=3FH UMask=0CH Counter=0,1,2,3
UNC_H_RING_AK_USED.CCW_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=3FH UMask=04H Counter=0,1,2,3
UNC_H_RING_AK_USED.CCW_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=3FH UMask=08H Counter=0,1,2,3
UNC_H_RING_AK_USED.CW Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=3FH UMask=03H Counter=0,1,2,3
UNC_H_RING_AK_USED.CW_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=3FH UMask=01H Counter=0,1,2,3
UNC_H_RING_AK_USED.CW_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=3FH UMask=02H Counter=0,1,2,3
UNC_H_RING_BL_USED.ALL Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=40H UMask=0FH Counter=0,1,2,3
UNC_H_RING_BL_USED.CCW Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=40H UMask=0CH Counter=0,1,2,3
UNC_H_RING_BL_USED.CCW_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=40H UMask=04H Counter=0,1,2,3
UNC_H_RING_BL_USED.CCW_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=40H UMask=08H Counter=0,1,2,3
UNC_H_RING_BL_USED.CW Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=40H UMask=03H Counter=0,1,2,3
UNC_H_RING_BL_USED.CW_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=40H UMask=01H Counter=0,1,2,3
UNC_H_RING_BL_USED.CW_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=40H UMask=02H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_REG_CREDITS.CHN0 Counts the number of cycles when there are no "regular" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 0 only. EventSel=15H UMask=01H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_REG_CREDITS.CHN1 Counts the number of cycles when there are no "regular" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 1 only. EventSel=15H UMask=02H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_REG_CREDITS.CHN2 Counts the number of cycles when there are no "regular" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 2 only. EventSel=15H UMask=04H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_REG_CREDITS.CHN3 Counts the number of cycles when there are no "regular" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 3 only. EventSel=15H UMask=08H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_SPEC_CREDITS.CHN0 Counts the number of cycles when there are no "special" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 0 only. EventSel=16H UMask=01H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_SPEC_CREDITS.CHN1 Counts the number of cycles when there are no "special" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 1 only. EventSel=16H UMask=02H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_SPEC_CREDITS.CHN2 Counts the number of cycles when there are no "special" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 2 only. EventSel=16H UMask=04H Counter=0,1,2,3
UNC_H_RPQ_CYCLES_NO_SPEC_CREDITS.CHN3 Counts the number of cycles when there are no "special" credits available for posting reads from the HA into the iMC. In order to send reads into the memory controller, the HA must first acquire a credit for the iMC's RPQ (read pending queue). This queue is broken into regular credits/buffers that are used by general reads, and "special" requests such as ISOCH reads. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 3 only. EventSel=16H UMask=08H Counter=0,1,2,3
UNC_H_SBO0_CREDIT_OCCUPANCY.AD Number of Sbo 0 credits in use in a given cycle, per ring. EventSel=6AH UMask=01H Counter=0,1,2,3
UNC_H_SBO0_CREDIT_OCCUPANCY.BL Number of Sbo 0 credits in use in a given cycle, per ring. EventSel=6AH UMask=02H Counter=0,1,2,3
UNC_H_SBO0_CREDITS_ACQUIRED.AD Number of Sbo 0 credits acquired in a given cycle, per ring. EventSel=68H UMask=01H Counter=0,1,2,3
UNC_H_SBO0_CREDITS_ACQUIRED.BL Number of Sbo 0 credits acquired in a given cycle, per ring. EventSel=68H UMask=02H Counter=0,1,2,3
UNC_H_SBO1_CREDIT_OCCUPANCY.AD Number of Sbo 1 credits in use in a given cycle, per ring. EventSel=6BH UMask=01H Counter=0,1,2,3
UNC_H_SBO1_CREDIT_OCCUPANCY.BL Number of Sbo 1 credits in use in a given cycle, per ring. EventSel=6BH UMask=02H Counter=0,1,2,3
UNC_H_SBO1_CREDITS_ACQUIRED.AD Number of Sbo 1 credits acquired in a given cycle, per ring. EventSel=69H UMask=01H Counter=0,1,2,3
UNC_H_SBO1_CREDITS_ACQUIRED.BL Number of Sbo 1 credits acquired in a given cycle, per ring. EventSel=69H UMask=02H Counter=0,1,2,3
UNC_H_SNOOP_CYCLES_NE.ALL Counts cycles when one or more snoops are outstanding.; Tracked for snoops from both local and remote sockets. EventSel=08H UMask=03H Counter=0,1,2,3
UNC_H_SNOOP_CYCLES_NE.LOCAL Counts cycles when one or more snoops are outstanding.; This filter includes only requests coming from the local socket. EventSel=08H UMask=01H Counter=0,1,2,3
UNC_H_SNOOP_CYCLES_NE.REMOTE Counts cycles when one or more snoops are outstanding.; This filter includes only requests coming from remote sockets. EventSel=08H UMask=02H Counter=0,1,2,3
UNC_H_SNOOP_OCCUPANCY.LOCAL Accumulates the occupancy of either the local HA tracker pool that have snoops pending in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if an HT (HomeTracker) entry is available and this occupancy is decremented when all the snoop responses have returned.; This filter includes only requests coming from the local socket. EventSel=09H UMask=01H Counter=0,1,2,3
UNC_H_SNOOP_OCCUPANCY.REMOTE Accumulates the occupancy of either the local HA tracker pool that have snoops pending in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if an HT (HomeTracker) entry is available and this occupancy is decremented when all the snoop responses have returned.; This filter includes only requests coming from remote sockets. EventSel=09H UMask=02H Counter=0,1,2,3
UNC_H_SNOOP_RESP.RSP_FWD_WB Counts the total number of RspI snoop responses received. Whenever a snoops are issued, one or more snoop responses will be returned depending on the topology of the system. In systems larger than 2s, when multiple snoops are returned this will count all the snoops that are received. For example, if 3 snoops were issued and returned RspI, RspS, and RspSFwd; then each of these sub-events would increment by 1.; Filters for a snoop response of RspFwdWB. This snoop response is only used in 4s systems. It is used when a snoop HITM's in a remote caching agent and it directly forwards data to a requestor, and simultaneously returns data to the home to be written back to memory. EventSel=21H UMask=20H Counter=0,1,2,3
UNC_H_SNOOP_RESP.RSP_WB Counts the total number of RspI snoop responses received. Whenever a snoops are issued, one or more snoop responses will be returned depending on the topology of the system. In systems larger than 2s, when multiple snoops are returned this will count all the snoops that are received. For example, if 3 snoops were issued and returned RspI, RspS, and RspSFwd; then each of these sub-events would increment by 1.; Filters for a snoop response of RspIWB or RspSWB. This is returned when a non-RFO request hits in M state. Data and Code Reads can return either RspIWB or RspSWB depending on how the system has been configured. InvItoE transactions will also return RspIWB because they must acquire ownership. EventSel=21H UMask=10H Counter=0,1,2,3
UNC_H_SNOOP_RESP.RSPCNFLCT Counts the total number of RspI snoop responses received. Whenever a snoops are issued, one or more snoop responses will be returned depending on the topology of the system. In systems larger than 2s, when multiple snoops are returned this will count all the snoops that are received. For example, if 3 snoops were issued and returned RspI, RspS, and RspSFwd; then each of these sub-events would increment by 1.; Filters for snoops responses of RspConflict. This is returned when a snoop finds an existing outstanding transaction in a remote caching agent when it CAMs that caching agent. This triggers conflict resolution hardware. This covers both RspCnflct and RspCnflctWbI. EventSel=21H UMask=40H Counter=0,1,2,3
UNC_H_SNOOP_RESP.RSPI Counts the total number of RspI snoop responses received. Whenever a snoops are issued, one or more snoop responses will be returned depending on the topology of the system. In systems larger than 2s, when multiple snoops are returned this will count all the snoops that are received. For example, if 3 snoops were issued and returned RspI, RspS, and RspSFwd; then each of these sub-events would increment by 1.; Filters for snoops responses of RspI. RspI is returned when the remote cache does not have the data, or when the remote cache silently evicts data (such as when an RFO hits non-modified data). EventSel=21H UMask=01H Counter=0,1,2,3
UNC_H_SNOOP_RESP.RSPIFWD Counts the total number of RspI snoop responses received. Whenever a snoops are issued, one or more snoop responses will be returned depending on the topology of the system. In systems larger than 2s, when multiple snoops are returned this will count all the snoops that are received. For example, if 3 snoops were issued and returned RspI, RspS, and RspSFwd; then each of these sub-events would increment by 1.; Filters for snoop responses of RspIFwd. This is returned when a remote caching agent forwards data and the requesting agent is able to acquire the data in E or M states. This is commonly returned with RFO transactions. It can be either a HitM or a HitFE. EventSel=21H UMask=04H Counter=0,1,2,3
UNC_H_SNOOP_RESP.RSPS Counts the total number of RspI snoop responses received. Whenever a snoops are issued, one or more snoop responses will be returned depending on the topology of the system. In systems larger than 2s, when multiple snoops are returned this will count all the snoops that are received. For example, if 3 snoops were issued and returned RspI, RspS, and RspSFwd; then each of these sub-events would increment by 1.; Filters for snoop responses of RspS. RspS is returned when a remote cache has data but is not forwarding it. It is a way to let the requesting socket know that it cannot allocate the data in E state. No data is sent with S RspS. EventSel=21H UMask=02H Counter=0,1,2,3
UNC_H_SNOOP_RESP.RSPSFWD Counts the total number of RspI snoop responses received. Whenever a snoops are issued, one or more snoop responses will be returned depending on the topology of the system. In systems larger than 2s, when multiple snoops are returned this will count all the snoops that are received. For example, if 3 snoops were issued and returned RspI, RspS, and RspSFwd; then each of these sub-events would increment by 1.; Filters for a snoop response of RspSFwd. This is returned when a remote caching agent forwards data but holds on to its current copy. This is common for data and code reads that hit in a remote socket in E or F state. EventSel=21H UMask=08H Counter=0,1,2,3
UNC_H_SNOOPS_RSP_AFTER_DATA.LOCAL Counts the number of reads when the snoop was on the critical path to the data return.; This filter includes only requests coming from the local socket. EventSel=0AH UMask=01H Counter=0,1,2,3
UNC_H_SNOOPS_RSP_AFTER_DATA.REMOTE Counts the number of reads when the snoop was on the critical path to the data return.; This filter includes only requests coming from remote sockets. EventSel=0AH UMask=02H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.OTHER Number of snoop responses received for a Local request; Filters for all other snoop responses. EventSel=60H UMask=80H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.RSPCNFLCT Number of snoop responses received for a Local request; Filters for snoops responses of RspConflict. This is returned when a snoop finds an existing outstanding transaction in a remote caching agent when it CAMs that caching agent. This triggers conflict resolution hardware. This covers both RspCnflct and RspCnflctWbI. EventSel=60H UMask=40H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.RSPI Number of snoop responses received for a Local request; Filters for snoops responses of RspI. RspI is returned when the remote cache does not have the data, or when the remote cache silently evicts data (such as when an RFO hits non-modified data). EventSel=60H UMask=01H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.RSPIFWD Number of snoop responses received for a Local request; Filters for snoop responses of RspIFwd. This is returned when a remote caching agent forwards data and the requesting agent is able to acquire the data in E or M states. This is commonly returned with RFO transactions. It can be either a HitM or a HitFE. EventSel=60H UMask=04H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.RSPS Number of snoop responses received for a Local request; Filters for snoop responses of RspS. RspS is returned when a remote cache has data but is not forwarding it. It is a way to let the requesting socket know that it cannot allocate the data in E state. No data is sent with S RspS. EventSel=60H UMask=02H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.RSPSFWD Number of snoop responses received for a Local request; Filters for a snoop response of RspSFwd. This is returned when a remote caching agent forwards data but holds on to its current copy. This is common for data and code reads that hit in a remote socket in E or F state. EventSel=60H UMask=08H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.RSPxFWDxWB Number of snoop responses received for a Local request; Filters for a snoop response of RspFwdWB. This snoop response is only used in 4s systems. It is used when a snoop HITM's in a remote caching agent and it directly forwards data to a requestor, and simultaneously returns data to the home to be written back to memory. EventSel=60H UMask=20H Counter=0,1,2,3
UNC_H_SNP_RESP_RECV_LOCAL.RSPxWB Number of snoop responses received for a Local request; Filters for a snoop response of RspIWB or RspSWB. This is returned when a non-RFO request hits in M state. Data and Code Reads can return either RspIWB or RspSWB depending on how the system has been configured. InvItoE transactions will also return RspIWB because they must acquire ownership. EventSel=60H UMask=10H Counter=0,1,2,3
UNC_H_STALL_NO_SBO_CREDIT.SBO0_AD Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=6CH UMask=01H Counter=0,1,2,3
UNC_H_STALL_NO_SBO_CREDIT.SBO0_BL Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=6CH UMask=04H Counter=0,1,2,3
UNC_H_STALL_NO_SBO_CREDIT.SBO1_AD Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=6CH UMask=02H Counter=0,1,2,3
UNC_H_STALL_NO_SBO_CREDIT.SBO1_BL Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=6CH UMask=08H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION0 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 0 EventSel=1BH UMask=01H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION1 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 1 EventSel=1BH UMask=02H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION2 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 2 EventSel=1BH UMask=04H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION3 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 3 EventSel=1BH UMask=08H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION4 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 4 EventSel=1BH UMask=10H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION5 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 5 EventSel=1BH UMask=20H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION6 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 6 EventSel=1BH UMask=40H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G0.REGION7 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 0 to 7. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 7 EventSel=1BH UMask=80H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G1.REGION10 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 8 to 10. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 10 EventSel=1CH UMask=04H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G1.REGION11 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 8 to 10. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 11 EventSel=1CH UMask=08H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G1.REGION8 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 8 to 10. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 8 EventSel=1CH UMask=01H Counter=0,1,2,3
UNC_H_TAD_REQUESTS_G1.REGION9 Counts the number of HA requests to a given TAD region. There are up to 11 TAD (target address decode) regions in each home agent. All requests destined for the memory controller must first be decoded to determine which TAD region they are in. This event is filtered based on the TAD region ID, and covers regions 8 to 10. This event is useful for understanding how applications are using the memory that is spread across the different memory regions. It is particularly useful for "Monroe" systems that use the TAD to enable individual channels to enter self-refresh to save power.; Filters request made to TAD Region 9 EventSel=1CH UMask=02H Counter=0,1,2,3
UNC_H_TRACKER_CYCLES_FULL.ALL Counts the number of cycles when the local HA tracker pool is completely used. This can be used with edge detect to identify the number of situations when the pool became fully utilized. This should not be confused with RTID credit usage -- which must be tracked inside each cbo individually -- but represents the actual tracker buffer structure. In other words, the system could be starved for RTIDs but not fill up the HA trackers. HA trackers are allocated as soon as a request enters the HA and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring.; Counts the number of cycles when the HA tracker pool (HT) is completely used including reserved HT entries. It will not return valid count when BT is disabled. EventSel=02H UMask=02H Counter=0,1,2,3
UNC_H_TRACKER_CYCLES_FULL.GP Counts the number of cycles when the local HA tracker pool is completely used. This can be used with edge detect to identify the number of situations when the pool became fully utilized. This should not be confused with RTID credit usage -- which must be tracked inside each cbo individually -- but represents the actual tracker buffer structure. In other words, the system could be starved for RTIDs but not fill up the HA trackers. HA trackers are allocated as soon as a request enters the HA and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring.; Counts the number of cycles when the general purpose (GP) HA tracker pool (HT) is completely used. It will not return valid count when BT is disabled. EventSel=02H UMask=01H Counter=0,1,2,3
UNC_H_TRACKER_CYCLES_NE.ALL Counts the number of cycles when the local HA tracker pool is not empty. This can be used with edge detect to identify the number of situations when the pool became empty. This should not be confused with RTID credit usage -- which must be tracked inside each cbo individually -- but represents the actual tracker buffer structure. In other words, this buffer could be completely empty, but there may still be credits in use by the CBos. This stat can be used in conjunction with the occupancy accumulation stat in order to calculate average queue occupancy. HA trackers are allocated as soon as a request enters the HA if an HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring.; Requests coming from both local and remote sockets. EventSel=03H UMask=03H Counter=0,1,2,3
UNC_H_TRACKER_CYCLES_NE.LOCAL Counts the number of cycles when the local HA tracker pool is not empty. This can be used with edge detect to identify the number of situations when the pool became empty. This should not be confused with RTID credit usage -- which must be tracked inside each cbo individually -- but represents the actual tracker buffer structure. In other words, this buffer could be completely empty, but there may still be credits in use by the CBos. This stat can be used in conjunction with the occupancy accumulation stat in order to calculate average queue occupancy. HA trackers are allocated as soon as a request enters the HA if an HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring.; This filter includes only requests coming from the local socket. EventSel=03H UMask=01H Counter=0,1,2,3
UNC_H_TRACKER_CYCLES_NE.REMOTE Counts the number of cycles when the local HA tracker pool is not empty. This can be used with edge detect to identify the number of situations when the pool became empty. This should not be confused with RTID credit usage -- which must be tracked inside each cbo individually -- but represents the actual tracker buffer structure. In other words, this buffer could be completely empty, but there may still be credits in use by the CBos. This stat can be used in conjunction with the occupancy accumulation stat in order to calculate average queue occupancy. HA trackers are allocated as soon as a request enters the HA if an HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring.; This filter includes only requests coming from remote sockets. EventSel=03H UMask=02H Counter=0,1,2,3
UNC_H_TRACKER_OCCUPANCY.INVITOE_LOCAL Accumulates the occupancy of the local HA tracker pool in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if a HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring. EventSel=04H UMask=40H Counter=0,1,2,3
UNC_H_TRACKER_OCCUPANCY.INVITOE_REMOTE Accumulates the occupancy of the local HA tracker pool in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if a HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring. EventSel=04H UMask=80H Counter=0,1,2,3
UNC_H_TRACKER_OCCUPANCY.READS_LOCAL Accumulates the occupancy of the local HA tracker pool in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if a HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring. EventSel=04H UMask=04H Counter=0,1,2,3
UNC_H_TRACKER_OCCUPANCY.READS_REMOTE Accumulates the occupancy of the local HA tracker pool in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if a HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring. EventSel=04H UMask=08H Counter=0,1,2,3
UNC_H_TRACKER_OCCUPANCY.WRITES_LOCAL Accumulates the occupancy of the local HA tracker pool in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if a HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring. EventSel=04H UMask=10H Counter=0,1,2,3
UNC_H_TRACKER_OCCUPANCY.WRITES_REMOTE Accumulates the occupancy of the local HA tracker pool in every cycle. This can be used in conjection with the "not empty" stat to calculate average queue occupancy or the "allocations" stat in order to calculate average queue latency. HA trackers are allocated as soon as a request enters the HA if a HT (Home Tracker) entry is available and is released after the snoop response and data return (or post in the case of a write) and the response is returned on the ring. EventSel=04H UMask=20H Counter=0,1,2,3
UNC_H_TRACKER_PENDING_OCCUPANCY.LOCAL Accumulates the number of transactions that have data from the memory controller until they get scheduled to the Egress. This can be used to calculate the queuing latency for two things. (1) If the system is waiting for snoops, this will increase. (2) If the system can't schedule to the Egress because of either (a) Egress Credits or (b) QPI BL IGR credits for remote requests.; This filter includes only requests coming from the local socket. EventSel=05H UMask=01H Counter=0,1,2,3
UNC_H_TRACKER_PENDING_OCCUPANCY.REMOTE Accumulates the number of transactions that have data from the memory controller until they get scheduled to the Egress. This can be used to calculate the queuing latency for two things. (1) If the system is waiting for snoops, this will increase. (2) If the system can't schedule to the Egress because of either (a) Egress Credits or (b) QPI BL IGR credits for remote requests.; This filter includes only requests coming from remote sockets. EventSel=05H UMask=02H Counter=0,1,2,3
UNC_H_TxR_AD.HOM Counts the number of outbound transactions on the AD ring. This can be filtered by the NDR and SNP message classes. See the filter descriptions for more details.; Filter for outbound NDR transactions sent on the AD ring. NDR stands for "non-data response" and is generally used for completions that do not include data. AD NDR is used for transactions to remote sockets. EventSel=0FH UMask=04H Counter=0,1,2,3
UNC_H_TxR_AD_CYCLES_FULL.ALL AD Egress Full; Cycles full from both schedulers EventSel=2AH UMask=03H Counter=0,1,2,3
UNC_H_TxR_AD_CYCLES_FULL.SCHED0 AD Egress Full; Filter for cycles full from scheduler bank 0 EventSel=2AH UMask=01H Counter=0,1,2,3
UNC_H_TxR_AD_CYCLES_FULL.SCHED1 AD Egress Full; Filter for cycles full from scheduler bank 1 EventSel=2AH UMask=02H Counter=0,1,2,3
UNC_H_TxR_AD_CYCLES_NE.ALL AD Egress Not Empty; Cycles full from both schedulers EventSel=29H UMask=03H Counter=0,1,2,3
UNC_H_TxR_AD_CYCLES_NE.SCHED0 AD Egress Not Empty; Filter for cycles not empty from scheduler bank 0 EventSel=29H UMask=01H Counter=0,1,2,3
UNC_H_TxR_AD_CYCLES_NE.SCHED1 AD Egress Not Empty; Filter for cycles not empty from scheduler bank 1 EventSel=29H UMask=02H Counter=0,1,2,3
UNC_H_TxR_AD_INSERTS.ALL AD Egress Allocations; Allocations from both schedulers EventSel=27H UMask=03H Counter=0,1,2,3
UNC_H_TxR_AD_INSERTS.SCHED0 AD Egress Allocations; Filter for allocations from scheduler bank 0 EventSel=27H UMask=01H Counter=0,1,2,3
UNC_H_TxR_AD_INSERTS.SCHED1 AD Egress Allocations; Filter for allocations from scheduler bank 1 EventSel=27H UMask=02H Counter=0,1,2,3
UNC_H_TxR_AK_CYCLES_FULL.ALL AK Egress Full; Cycles full from both schedulers EventSel=32H UMask=03H Counter=0,1,2,3
UNC_H_TxR_AK_CYCLES_FULL.SCHED0 AK Egress Full; Filter for cycles full from scheduler bank 0 EventSel=32H UMask=01H Counter=0,1,2,3
UNC_H_TxR_AK_CYCLES_FULL.SCHED1 AK Egress Full; Filter for cycles full from scheduler bank 1 EventSel=32H UMask=02H Counter=0,1,2,3
UNC_H_TxR_AK_CYCLES_NE.ALL AK Egress Not Empty; Cycles full from both schedulers EventSel=31H UMask=03H Counter=0,1,2,3
UNC_H_TxR_AK_CYCLES_NE.SCHED0 AK Egress Not Empty; Filter for cycles not empty from scheduler bank 0 EventSel=31H UMask=01H Counter=0,1,2,3
UNC_H_TxR_AK_CYCLES_NE.SCHED1 AK Egress Not Empty; Filter for cycles not empty from scheduler bank 1 EventSel=31H UMask=02H Counter=0,1,2,3
UNC_H_TxR_AK_INSERTS.ALL AK Egress Allocations; Allocations from both schedulers EventSel=2FH UMask=03H Counter=0,1,2,3
UNC_H_TxR_AK_INSERTS.SCHED0 AK Egress Allocations; Filter for allocations from scheduler bank 0 EventSel=2FH UMask=01H Counter=0,1,2,3
UNC_H_TxR_AK_INSERTS.SCHED1 AK Egress Allocations; Filter for allocations from scheduler bank 1 EventSel=2FH UMask=02H Counter=0,1,2,3
UNC_H_TxR_BL.DRS_CACHE Counts the number of DRS messages sent out on the BL ring. This can be filtered by the destination.; Filter for data being sent to the cache. EventSel=10H UMask=01H Counter=0,1,2,3
UNC_H_TxR_BL.DRS_CORE Counts the number of DRS messages sent out on the BL ring. This can be filtered by the destination.; Filter for data being sent directly to the requesting core. EventSel=10H UMask=02H Counter=0,1,2,3
UNC_H_TxR_BL.DRS_QPI Counts the number of DRS messages sent out on the BL ring. This can be filtered by the destination.; Filter for data being sent to a remote socket over QPI. EventSel=10H UMask=04H Counter=0,1,2,3
UNC_H_TxR_BL_CYCLES_FULL.ALL BL Egress Full; Cycles full from both schedulers EventSel=36H UMask=03H Counter=0,1,2,3
UNC_H_TxR_BL_CYCLES_FULL.SCHED0 BL Egress Full; Filter for cycles full from scheduler bank 0 EventSel=36H UMask=01H Counter=0,1,2,3
UNC_H_TxR_BL_CYCLES_FULL.SCHED1 BL Egress Full; Filter for cycles full from scheduler bank 1 EventSel=36H UMask=02H Counter=0,1,2,3
UNC_H_TxR_BL_CYCLES_NE.ALL BL Egress Not Empty; Cycles full from both schedulers EventSel=35H UMask=03H Counter=0,1,2,3
UNC_H_TxR_BL_CYCLES_NE.SCHED0 BL Egress Not Empty; Filter for cycles not empty from scheduler bank 0 EventSel=35H UMask=01H Counter=0,1,2,3
UNC_H_TxR_BL_CYCLES_NE.SCHED1 BL Egress Not Empty; Filter for cycles not empty from scheduler bank 1 EventSel=35H UMask=02H Counter=0,1,2,3
UNC_H_TxR_BL_INSERTS.ALL BL Egress Allocations; Allocations from both schedulers EventSel=33H UMask=03H Counter=0,1,2,3
UNC_H_TxR_BL_INSERTS.SCHED0 BL Egress Allocations; Filter for allocations from scheduler bank 0 EventSel=33H UMask=01H Counter=0,1,2,3
UNC_H_TxR_BL_INSERTS.SCHED1 BL Egress Allocations; Filter for allocations from scheduler bank 1 EventSel=33H UMask=02H Counter=0,1,2,3
UNC_H_TxR_STARVED.AK Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time. EventSel=6DH UMask=01H Counter=0,1,2,3
UNC_H_TxR_STARVED.BL Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time. EventSel=6DH UMask=02H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_REG_CREDITS.CHN0 Counts the number of cycles when there are no "regular" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 0 only. EventSel=18H UMask=01H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_REG_CREDITS.CHN1 Counts the number of cycles when there are no "regular" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 1 only. EventSel=18H UMask=02H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_REG_CREDITS.CHN2 Counts the number of cycles when there are no "regular" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 2 only. EventSel=18H UMask=04H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_REG_CREDITS.CHN3 Counts the number of cycles when there are no "regular" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the regular credits Common high bandwidth workloads should be able to make use of all of the regular buffers, but it will be difficult (and uncommon) to make use of both the regular and special buffers at the same time. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 3 only. EventSel=18H UMask=08H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_SPEC_CREDITS.CHN0 Counts the number of cycles when there are no "special" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 0 only. EventSel=19H UMask=01H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_SPEC_CREDITS.CHN1 Counts the number of cycles when there are no "special" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 1 only. EventSel=19H UMask=02H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_SPEC_CREDITS.CHN2 Counts the number of cycles when there are no "special" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 2 only. EventSel=19H UMask=04H Counter=0,1,2,3
UNC_H_WPQ_CYCLES_NO_SPEC_CREDITS.CHN3 Counts the number of cycles when there are no "special" credits available for posting writes from the HA into the iMC. In order to send writes into the memory controller, the HA must first acquire a credit for the iMC's WPQ (write pending queue). This queue is broken into regular credits/buffers that are used by general writes, and "special" requests such as ISOCH writes. This count only tracks the "special" credits. This statistic is generally not interesting for general IA workloads, but may be of interest for understanding the characteristics of systems using ISOCH. One can filter based on the memory controller channel. One or more channels can be tracked at a given time.; Filter for memory controller channel 3 only. EventSel=19H UMask=08H Counter=0,1,2,3
UNC_M_ACT_COUNT.BYP Counts the number of DRAM Activate commands sent on this channel. Activate commands are issued to open up a page on the DRAM devices so that it can be read or written to with a CAS. One can calculate the number of Page Misses by subtracting the number of Page Miss precharges from the number of Activates. EventSel=01H UMask=08H Counter=0,1,2,3
UNC_M_ACT_COUNT.RD Counts the number of DRAM Activate commands sent on this channel. Activate commands are issued to open up a page on the DRAM devices so that it can be read or written to with a CAS. One can calculate the number of Page Misses by subtracting the number of Page Miss precharges from the number of Activates. EventSel=01H UMask=01H Counter=0,1,2,3
UNC_M_ACT_COUNT.WR Counts the number of DRAM Activate commands sent on this channel. Activate commands are issued to open up a page on the DRAM devices so that it can be read or written to with a CAS. One can calculate the number of Page Misses by subtracting the number of Page Miss precharges from the number of Activates. EventSel=01H UMask=02H Counter=0,1,2,3
UNC_M_BYP_CMDS.ACT ACT command issued by 2 cycle bypass EventSel=A1H UMask=01H Counter=0,1,2,3
UNC_M_BYP_CMDS.CAS CAS command issued by 2 cycle bypass EventSel=A1H UMask=02H Counter=0,1,2,3
UNC_M_BYP_CMDS.PRE PRE command issued by 2 cycle bypass EventSel=A1H UMask=04H Counter=0,1,2,3
UNC_M_CAS_COUNT.ALL DRAM RD_CAS and WR_CAS Commands; Counts the total number of DRAM CAS commands issued on this channel. EventSel=04H UMask=0FH Counter=0,1,2,3
UNC_M_CAS_COUNT.RD DRAM RD_CAS and WR_CAS Commands; Counts the total number of DRAM Read CAS commands issued on this channel (including underfills). EventSel=04H UMask=03H Counter=0,1,2,3
UNC_M_CAS_COUNT.RD_REG DRAM RD_CAS and WR_CAS Commands; Counts the total number or DRAM Read CAS commands issued on this channel. This includes both regular RD CAS commands as well as those with implicit Precharge. AutoPre is only used in systems that are using closed page policy. We do not filter based on major mode, as RD_CAS is not issued during WMM (with the exception of underfills). EventSel=04H UMask=01H Counter=0,1,2,3
UNC_M_CAS_COUNT.RD_RMM DRAM RD_CAS and WR_CAS Commands EventSel=04H UMask=20H Counter=0,1,2,3
UNC_M_CAS_COUNT.RD_UNDERFILL DRAM RD_CAS and WR_CAS Commands; Counts the number of underfill reads that are issued by the memory controller. This will generally be about the same as the number of partial writes, but may be slightly less because of partials hitting in the WPQ. While it is possible for underfills to be issed in both WMM and RMM, this event counts both. EventSel=04H UMask=02H Counter=0,1,2,3
UNC_M_CAS_COUNT.RD_WMM DRAM RD_CAS and WR_CAS Commands EventSel=04H UMask=10H Counter=0,1,2,3
UNC_M_CAS_COUNT.WR DRAM RD_CAS and WR_CAS Commands; Counts the total number of DRAM Write CAS commands issued on this channel. EventSel=04H UMask=0CH Counter=0,1,2,3
UNC_M_CAS_COUNT.WR_RMM DRAM RD_CAS and WR_CAS Commands; Counts the total number of Opportunistic" DRAM Write CAS commands issued on this channel while in Read-Major-Mode. EventSel=04H UMask=08H Counter=0,1,2,3
UNC_M_CAS_COUNT.WR_WMM DRAM RD_CAS and WR_CAS Commands; Counts the total number or DRAM Write CAS commands issued on this channel while in Write-Major-Mode. EventSel=04H UMask=04H Counter=0,1,2,3
UNC_M_CLOCKTICKS_P Clockticks in the Memory Controller using one of the programmable counters EventSel=00H UMask=00H Counter=0,1,2,3
UNC_M_DRAM_PRE_ALL Counts the number of times that the precharge all command was sent. EventSel=06H UMask=00H Counter=0,1,2,3
UNC_M_DRAM_REFRESH.HIGH Counts the number of refreshes issued. EventSel=05H UMask=04H Counter=0,1,2,3
UNC_M_DRAM_REFRESH.PANIC Counts the number of refreshes issued. EventSel=05H UMask=02H Counter=0,1,2,3
UNC_M_ECC_CORRECTABLE_ERRORS Counts the number of ECC errors detected and corrected by the iMC on this channel. This counter is only useful with ECC DRAM devices. This count will increment one time for each correction regardless of the number of bits corrected. The iMC can correct up to 4 bit errors in independent channel mode and 8 bit errors in lockstep mode. EventSel=09H UMask=00H Counter=0,1,2,3
UNC_M_MAJOR_MODES.ISOCH Counts the total number of cycles spent in a major mode (selected by a filter) on the given channel. Major modea are channel-wide, and not a per-rank (or dimm or bank) mode.; We group these two modes together so that we can use four counters to track each of the major modes at one time. These major modes are used whenever there is an ISOCH txn in the memory controller. In these mode, only ISOCH transactions are processed. EventSel=07H UMask=08H Counter=0,1,2,3
UNC_M_MAJOR_MODES.PARTIAL Counts the total number of cycles spent in a major mode (selected by a filter) on the given channel. Major modea are channel-wide, and not a per-rank (or dimm or bank) mode.; This major mode is used to drain starved underfill reads. Regular reads and writes are blocked and only underfill reads will be processed. EventSel=07H UMask=04H Counter=0,1,2,3
UNC_M_MAJOR_MODES.READ Counts the total number of cycles spent in a major mode (selected by a filter) on the given channel. Major modea are channel-wide, and not a per-rank (or dimm or bank) mode.; Read Major Mode is the default mode for the iMC, as reads are generally more critical to forward progress than writes. EventSel=07H UMask=01H Counter=0,1,2,3
UNC_M_MAJOR_MODES.WRITE Counts the total number of cycles spent in a major mode (selected by a filter) on the given channel. Major modea are channel-wide, and not a per-rank (or dimm or bank) mode.; This mode is triggered when the WPQ hits high occupancy and causes writes to be higher priority than reads. This can cause blips in the available read bandwidth in the system and temporarily increase read latencies in order to achieve better bus utilizations and higher bandwidth. EventSel=07H UMask=02H Counter=0,1,2,3
UNC_M_POWER_CHANNEL_DLLOFF Number of cycles when all the ranks in the channel are in CKE Slow (DLLOFF) mode. EventSel=84H UMask=00H Counter=0,1,2,3
UNC_M_POWER_CHANNEL_PPD Number of cycles when all the ranks in the channel are in PPD mode. If IBT=off is enabled, then this can be used to count those cycles. If it is not enabled, then this can count the number of cycles when that could have been taken advantage of. EventSel=85H UMask=00H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK0 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=01H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK1 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=02H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK2 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=04H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK3 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=08H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK4 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=10H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK5 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=20H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK6 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=40H Counter=0,1,2,3
UNC_M_POWER_CKE_CYCLES.RANK7 Number of cycles spent in CKE ON mode. The filter allows you to select a rank to monitor. If multiple ranks are in CKE ON mode at one time, the counter will ONLY increment by one rather than doing accumulation. Multiple counters will need to be used to track multiple ranks simultaneously. There is no distinction between the different CKE modes (APD, PPDS, PPDF). This can be determined based on the system programming. These events should commonly be used with Invert to get the number of cycles in power saving mode. Edge Detect is also useful here. Make sure that you do NOT use Invert with Edge Detect (this just confuses the system and is not necessary). EventSel=83H UMask=80H Counter=0,1,2,3
UNC_M_POWER_CRITICAL_THROTTLE_CYCLES Counts the number of cycles when the iMC is in critical thermal throttling. When this happens, all traffic is blocked. This should be rare unless something bad is going on in the platform. There is no filtering by rank for this event. EventSel=86H UMask=00H Counter=0,1,2,3
UNC_M_POWER_PCU_THROTTLING UNC_M_POWER_PCU_THROTTLING EventSel=42H UMask=00H Counter=0,1,2,3
UNC_M_POWER_SELF_REFRESH Counts the number of cycles when the iMC is in self-refresh and the iMC still has a clock. This happens in some package C-states. For example, the PCU may ask the iMC to enter self-refresh even though some of the cores are still processing. One use of this is for Monroe technology. Self-refresh is required during package C3 and C6, but there is no clock in the iMC at this time, so it is not possible to count these cases. EventSel=43H UMask=00H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK0 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1.; Thermal throttling is performed per DIMM. We support 3 DIMMs per channel. This ID allows us to filter by ID. EventSel=41H UMask=01H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK1 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1. EventSel=41H UMask=02H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK2 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1. EventSel=41H UMask=04H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK3 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1. EventSel=41H UMask=08H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK4 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1. EventSel=41H UMask=10H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK5 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1. EventSel=41H UMask=20H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK6 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1. EventSel=41H UMask=40H Counter=0,1,2,3
UNC_M_POWER_THROTTLE_CYCLES.RANK7 Counts the number of cycles while the iMC is being throttled by either thermal constraints or by the PCU throttling. It is not possible to distinguish between the two. This can be filtered by rank. If multiple ranks are selected and are being throttled at the same time, the counter will only increment by 1. EventSel=41H UMask=80H Counter=0,1,2,3
UNC_M_PRE_COUNT.BYP Counts the number of DRAM Precharge commands sent on this channel. EventSel=02H UMask=10H Counter=0,1,2,3
UNC_M_PRE_COUNT.PAGE_CLOSE Counts the number of DRAM Precharge commands sent on this channel.; Counts the number of DRAM Precharge commands sent on this channel as a result of the page close counter expiring. This does not include implicit precharge commands sent in auto-precharge mode. EventSel=02H UMask=02H Counter=0,1,2,3
UNC_M_PRE_COUNT.PAGE_MISS Counts the number of DRAM Precharge commands sent on this channel.; Counts the number of DRAM Precharge commands sent on this channel as a result of page misses. This does not include explicit precharge commands sent with CAS commands in Auto-Precharge mode. This does not include PRE commands sent as a result of the page close counter expiration. EventSel=02H UMask=01H Counter=0,1,2,3
UNC_M_PRE_COUNT.RD Counts the number of DRAM Precharge commands sent on this channel. EventSel=02H UMask=04H Counter=0,1,2,3
UNC_M_PRE_COUNT.WR Counts the number of DRAM Precharge commands sent on this channel. EventSel=02H UMask=08H Counter=0,1,2,3
UNC_M_PREEMPTION.RD_PREEMPT_RD Counts the number of times a read in the iMC preempts another read or write. Generally reads to an open page are issued ahead of requests to closed pages. This improves the page hit rate of the system. However, high priority requests can cause pages of active requests to be closed in order to get them out. This will reduce the latency of the high-priority request at the expense of lower bandwidth and increased overall average latency.; Filter for when a read preempts another read. EventSel=08H UMask=01H Counter=0,1,2,3
UNC_M_PREEMPTION.RD_PREEMPT_WR Counts the number of times a read in the iMC preempts another read or write. Generally reads to an open page are issued ahead of requests to closed pages. This improves the page hit rate of the system. However, high priority requests can cause pages of active requests to be closed in order to get them out. This will reduce the latency of the high-priority request at the expense of lower bandwidth and increased overall average latency.; Filter for when a read preempts a write. EventSel=08H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_PRIO.HIGH Read CAS issued with HIGH priority EventSel=A0H UMask=04H Counter=0,1,2,3
UNC_M_RD_CAS_PRIO.LOW Read CAS issued with LOW priority EventSel=A0H UMask=01H Counter=0,1,2,3
UNC_M_RD_CAS_PRIO.MED Read CAS issued with MEDIUM priority EventSel=A0H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_PRIO.PANIC Read CAS issued with PANIC NON ISOCH priority (starved) EventSel=A0H UMask=08H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.ALLBANKS RD_CAS Access to Rank 0; All Banks EventSel=B0H UMask=10H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK0 RD_CAS Access to Rank 0; Bank 0 EventSel=B0H UMask=00H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK1 RD_CAS Access to Rank 0; Bank 1 EventSel=B0H UMask=01H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK10 RD_CAS Access to Rank 0; Bank 10 EventSel=B0H UMask=0AH Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK11 RD_CAS Access to Rank 0; Bank 11 EventSel=B0H UMask=0BH Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK12 RD_CAS Access to Rank 0; Bank 12 EventSel=B0H UMask=0CH Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK13 RD_CAS Access to Rank 0; Bank 13 EventSel=B0H UMask=0DH Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK14 RD_CAS Access to Rank 0; Bank 14 EventSel=B0H UMask=0EH Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK15 RD_CAS Access to Rank 0; Bank 15 EventSel=B0H UMask=0FH Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK2 RD_CAS Access to Rank 0; Bank 2 EventSel=B0H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK3 RD_CAS Access to Rank 0; Bank 3 EventSel=B0H UMask=03H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK4 RD_CAS Access to Rank 0; Bank 4 EventSel=B0H UMask=04H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK5 RD_CAS Access to Rank 0; Bank 5 EventSel=B0H UMask=05H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK6 RD_CAS Access to Rank 0; Bank 6 EventSel=B0H UMask=06H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK7 RD_CAS Access to Rank 0; Bank 7 EventSel=B0H UMask=07H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK8 RD_CAS Access to Rank 0; Bank 8 EventSel=B0H UMask=08H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANK9 RD_CAS Access to Rank 0; Bank 9 EventSel=B0H UMask=09H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANKG0 RD_CAS Access to Rank 0; Bank Group 0 (Banks 0-3) EventSel=B0H UMask=11H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANKG1 RD_CAS Access to Rank 0; Bank Group 1 (Banks 4-7) EventSel=B0H UMask=12H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANKG2 RD_CAS Access to Rank 0; Bank Group 2 (Banks 8-11) EventSel=B0H UMask=13H Counter=0,1,2,3
UNC_M_RD_CAS_RANK0.BANKG3 RD_CAS Access to Rank 0; Bank Group 3 (Banks 12-15) EventSel=B0H UMask=14H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.ALLBANKS RD_CAS Access to Rank 1; All Banks EventSel=B1H UMask=10H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK0 RD_CAS Access to Rank 1; Bank 0 EventSel=B1H UMask=00H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK1 RD_CAS Access to Rank 1; Bank 1 EventSel=B1H UMask=01H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK10 RD_CAS Access to Rank 1; Bank 10 EventSel=B1H UMask=0AH Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK11 RD_CAS Access to Rank 1; Bank 11 EventSel=B1H UMask=0BH Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK12 RD_CAS Access to Rank 1; Bank 12 EventSel=B1H UMask=0CH Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK13 RD_CAS Access to Rank 1; Bank 13 EventSel=B1H UMask=0DH Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK14 RD_CAS Access to Rank 1; Bank 14 EventSel=B1H UMask=0EH Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK15 RD_CAS Access to Rank 1; Bank 15 EventSel=B1H UMask=0FH Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK2 RD_CAS Access to Rank 1; Bank 2 EventSel=B1H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK3 RD_CAS Access to Rank 1; Bank 3 EventSel=B1H UMask=03H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK4 RD_CAS Access to Rank 1; Bank 4 EventSel=B1H UMask=04H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK5 RD_CAS Access to Rank 1; Bank 5 EventSel=B1H UMask=05H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK6 RD_CAS Access to Rank 1; Bank 6 EventSel=B1H UMask=06H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK7 RD_CAS Access to Rank 1; Bank 7 EventSel=B1H UMask=07H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK8 RD_CAS Access to Rank 1; Bank 8 EventSel=B1H UMask=08H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANK9 RD_CAS Access to Rank 1; Bank 9 EventSel=B1H UMask=09H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANKG0 RD_CAS Access to Rank 1; Bank Group 0 (Banks 0-3) EventSel=B1H UMask=11H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANKG1 RD_CAS Access to Rank 1; Bank Group 1 (Banks 4-7) EventSel=B1H UMask=12H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANKG2 RD_CAS Access to Rank 1; Bank Group 2 (Banks 8-11) EventSel=B1H UMask=13H Counter=0,1,2,3
UNC_M_RD_CAS_RANK1.BANKG3 RD_CAS Access to Rank 1; Bank Group 3 (Banks 12-15) EventSel=B1H UMask=14H Counter=0,1,2,3
UNC_M_RD_CAS_RANK2.BANK0 RD_CAS Access to Rank 2; Bank 0 EventSel=B2H UMask=00H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.ALLBANKS RD_CAS Access to Rank 4; All Banks EventSel=B4H UMask=10H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK0 RD_CAS Access to Rank 4; Bank 0 EventSel=B4H UMask=00H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK1 RD_CAS Access to Rank 4; Bank 1 EventSel=B4H UMask=01H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK10 RD_CAS Access to Rank 4; Bank 10 EventSel=B4H UMask=0AH Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK11 RD_CAS Access to Rank 4; Bank 11 EventSel=B4H UMask=0BH Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK12 RD_CAS Access to Rank 4; Bank 12 EventSel=B4H UMask=0CH Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK13 RD_CAS Access to Rank 4; Bank 13 EventSel=B4H UMask=0DH Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK14 RD_CAS Access to Rank 4; Bank 14 EventSel=B4H UMask=0EH Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK15 RD_CAS Access to Rank 4; Bank 15 EventSel=B4H UMask=0FH Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK2 RD_CAS Access to Rank 4; Bank 2 EventSel=B4H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK3 RD_CAS Access to Rank 4; Bank 3 EventSel=B4H UMask=03H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK4 RD_CAS Access to Rank 4; Bank 4 EventSel=B4H UMask=04H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK5 RD_CAS Access to Rank 4; Bank 5 EventSel=B4H UMask=05H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK6 RD_CAS Access to Rank 4; Bank 6 EventSel=B4H UMask=06H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK7 RD_CAS Access to Rank 4; Bank 7 EventSel=B4H UMask=07H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK8 RD_CAS Access to Rank 4; Bank 8 EventSel=B4H UMask=08H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANK9 RD_CAS Access to Rank 4; Bank 9 EventSel=B4H UMask=09H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANKG0 RD_CAS Access to Rank 4; Bank Group 0 (Banks 0-3) EventSel=B4H UMask=11H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANKG1 RD_CAS Access to Rank 4; Bank Group 1 (Banks 4-7) EventSel=B4H UMask=12H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANKG2 RD_CAS Access to Rank 4; Bank Group 2 (Banks 8-11) EventSel=B4H UMask=13H Counter=0,1,2,3
UNC_M_RD_CAS_RANK4.BANKG3 RD_CAS Access to Rank 4; Bank Group 3 (Banks 12-15) EventSel=B4H UMask=14H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.ALLBANKS RD_CAS Access to Rank 5; All Banks EventSel=B5H UMask=10H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK0 RD_CAS Access to Rank 5; Bank 0 EventSel=B5H UMask=00H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK1 RD_CAS Access to Rank 5; Bank 1 EventSel=B5H UMask=01H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK10 RD_CAS Access to Rank 5; Bank 10 EventSel=B5H UMask=0AH Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK11 RD_CAS Access to Rank 5; Bank 11 EventSel=B5H UMask=0BH Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK12 RD_CAS Access to Rank 5; Bank 12 EventSel=B5H UMask=0CH Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK13 RD_CAS Access to Rank 5; Bank 13 EventSel=B5H UMask=0DH Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK14 RD_CAS Access to Rank 5; Bank 14 EventSel=B5H UMask=0EH Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK15 RD_CAS Access to Rank 5; Bank 15 EventSel=B5H UMask=0FH Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK2 RD_CAS Access to Rank 5; Bank 2 EventSel=B5H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK3 RD_CAS Access to Rank 5; Bank 3 EventSel=B5H UMask=03H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK4 RD_CAS Access to Rank 5; Bank 4 EventSel=B5H UMask=04H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK5 RD_CAS Access to Rank 5; Bank 5 EventSel=B5H UMask=05H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK6 RD_CAS Access to Rank 5; Bank 6 EventSel=B5H UMask=06H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK7 RD_CAS Access to Rank 5; Bank 7 EventSel=B5H UMask=07H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK8 RD_CAS Access to Rank 5; Bank 8 EventSel=B5H UMask=08H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANK9 RD_CAS Access to Rank 5; Bank 9 EventSel=B5H UMask=09H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANKG0 RD_CAS Access to Rank 5; Bank Group 0 (Banks 0-3) EventSel=B5H UMask=11H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANKG1 RD_CAS Access to Rank 5; Bank Group 1 (Banks 4-7) EventSel=B5H UMask=12H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANKG2 RD_CAS Access to Rank 5; Bank Group 2 (Banks 8-11) EventSel=B5H UMask=13H Counter=0,1,2,3
UNC_M_RD_CAS_RANK5.BANKG3 RD_CAS Access to Rank 5; Bank Group 3 (Banks 12-15) EventSel=B5H UMask=14H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.ALLBANKS RD_CAS Access to Rank 6; All Banks EventSel=B6H UMask=10H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK0 RD_CAS Access to Rank 6; Bank 0 EventSel=B6H UMask=00H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK1 RD_CAS Access to Rank 6; Bank 1 EventSel=B6H UMask=01H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK10 RD_CAS Access to Rank 6; Bank 10 EventSel=B6H UMask=0AH Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK11 RD_CAS Access to Rank 6; Bank 11 EventSel=B6H UMask=0BH Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK12 RD_CAS Access to Rank 6; Bank 12 EventSel=B6H UMask=0CH Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK13 RD_CAS Access to Rank 6; Bank 13 EventSel=B6H UMask=0DH Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK14 RD_CAS Access to Rank 6; Bank 14 EventSel=B6H UMask=0EH Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK15 RD_CAS Access to Rank 6; Bank 15 EventSel=B6H UMask=0FH Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK2 RD_CAS Access to Rank 6; Bank 2 EventSel=B6H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK3 RD_CAS Access to Rank 6; Bank 3 EventSel=B6H UMask=03H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK4 RD_CAS Access to Rank 6; Bank 4 EventSel=B6H UMask=04H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK5 RD_CAS Access to Rank 6; Bank 5 EventSel=B6H UMask=05H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK6 RD_CAS Access to Rank 6; Bank 6 EventSel=B6H UMask=06H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK7 RD_CAS Access to Rank 6; Bank 7 EventSel=B6H UMask=07H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK8 RD_CAS Access to Rank 6; Bank 8 EventSel=B6H UMask=08H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANK9 RD_CAS Access to Rank 6; Bank 9 EventSel=B6H UMask=09H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANKG0 RD_CAS Access to Rank 6; Bank Group 0 (Banks 0-3) EventSel=B6H UMask=11H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANKG1 RD_CAS Access to Rank 6; Bank Group 1 (Banks 4-7) EventSel=B6H UMask=12H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANKG2 RD_CAS Access to Rank 6; Bank Group 2 (Banks 8-11) EventSel=B6H UMask=13H Counter=0,1,2,3
UNC_M_RD_CAS_RANK6.BANKG3 RD_CAS Access to Rank 6; Bank Group 3 (Banks 12-15) EventSel=B6H UMask=14H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.ALLBANKS RD_CAS Access to Rank 7; All Banks EventSel=B7H UMask=10H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK0 RD_CAS Access to Rank 7; Bank 0 EventSel=B7H UMask=00H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK1 RD_CAS Access to Rank 7; Bank 1 EventSel=B7H UMask=01H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK10 RD_CAS Access to Rank 7; Bank 10 EventSel=B7H UMask=0AH Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK11 RD_CAS Access to Rank 7; Bank 11 EventSel=B7H UMask=0BH Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK12 RD_CAS Access to Rank 7; Bank 12 EventSel=B7H UMask=0CH Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK13 RD_CAS Access to Rank 7; Bank 13 EventSel=B7H UMask=0DH Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK14 RD_CAS Access to Rank 7; Bank 14 EventSel=B7H UMask=0EH Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK15 RD_CAS Access to Rank 7; Bank 15 EventSel=B7H UMask=0FH Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK2 RD_CAS Access to Rank 7; Bank 2 EventSel=B7H UMask=02H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK3 RD_CAS Access to Rank 7; Bank 3 EventSel=B7H UMask=03H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK4 RD_CAS Access to Rank 7; Bank 4 EventSel=B7H UMask=04H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK5 RD_CAS Access to Rank 7; Bank 5 EventSel=B7H UMask=05H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK6 RD_CAS Access to Rank 7; Bank 6 EventSel=B7H UMask=06H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK7 RD_CAS Access to Rank 7; Bank 7 EventSel=B7H UMask=07H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK8 RD_CAS Access to Rank 7; Bank 8 EventSel=B7H UMask=08H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANK9 RD_CAS Access to Rank 7; Bank 9 EventSel=B7H UMask=09H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANKG0 RD_CAS Access to Rank 7; Bank Group 0 (Banks 0-3) EventSel=B7H UMask=11H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANKG1 RD_CAS Access to Rank 7; Bank Group 1 (Banks 4-7) EventSel=B7H UMask=12H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANKG2 RD_CAS Access to Rank 7; Bank Group 2 (Banks 8-11) EventSel=B7H UMask=13H Counter=0,1,2,3
UNC_M_RD_CAS_RANK7.BANKG3 RD_CAS Access to Rank 7; Bank Group 3 (Banks 12-15) EventSel=B7H UMask=14H Counter=0,1,2,3
UNC_M_RPQ_CYCLES_NE Counts the number of cycles that the Read Pending Queue is not empty. This can then be used to calculate the average occupancy (in conjunction with the Read Pending Queue Occupancy count). The RPQ is used to schedule reads out to the memory controller and to track the requests. Requests allocate into the RPQ soon after they enter the memory controller, and need credits for an entry in this buffer before being sent from the HA to the iMC. They deallocate after the CAS command has been issued to memory. This filter is to be used in conjunction with the occupancy filter so that one can correctly track the average occupancies for schedulable entries and scheduled requests. EventSel=11H UMask=00H Counter=0,1,2,3
UNC_M_RPQ_INSERTS Counts the number of allocations into the Read Pending Queue. This queue is used to schedule reads out to the memory controller and to track the requests. Requests allocate into the RPQ soon after they enter the memory controller, and need credits for an entry in this buffer before being sent from the HA to the iMC. They deallocate after the CAS command has been issued to memory. This includes both ISOCH and non-ISOCH requests. EventSel=10H UMask=00H Counter=0,1,2,3
UNC_M_VMSE_MXB_WR_OCCUPANCY VMSE MXB write buffer occupancy EventSel=91H UMask=00H Counter=0,1,2,3
UNC_M_VMSE_WR_PUSH.RMM VMSE WR PUSH issued; VMSE write PUSH issued in RMM EventSel=90H UMask=02H Counter=0,1,2,3
UNC_M_VMSE_WR_PUSH.WMM VMSE WR PUSH issued; VMSE write PUSH issued in WMM EventSel=90H UMask=01H Counter=0,1,2,3
UNC_M_WMM_TO_RMM.LOW_THRESH Transition from WMM to RMM because of low threshold; Transition from WMM to RMM because of starve counter EventSel=C0H UMask=01H Counter=0,1,2,3
UNC_M_WMM_TO_RMM.STARVE Transition from WMM to RMM because of low threshold EventSel=C0H UMask=02H Counter=0,1,2,3
UNC_M_WMM_TO_RMM.VMSE_RETRY Transition from WMM to RMM because of low threshold EventSel=C0H UMask=04H Counter=0,1,2,3
UNC_M_WPQ_CYCLES_FULL Counts the number of cycles when the Write Pending Queue is full. When the WPQ is full, the HA will not be able to issue any additional read requests into the iMC. This count should be similar count in the HA which tracks the number of cycles that the HA has no WPQ credits, just somewhat smaller to account for the credit return overhead. EventSel=22H UMask=00H Counter=0,1,2,3
UNC_M_WPQ_CYCLES_NE Counts the number of cycles that the Write Pending Queue is not empty. This can then be used to calculate the average queue occupancy (in conjunction with the WPQ Occupancy Accumulation count). The WPQ is used to schedule write out to the memory controller and to track the writes. Requests allocate into the WPQ soon after they enter the memory controller, and need credits for an entry in this buffer before being sent from the HA to the iMC. They deallocate after being issued to DRAM. Write requests themselves are able to complete (from the perspective of the rest of the system) as soon they have "posted" to the iMC. This is not to be confused with actually performing the write to DRAM. Therefore, the average latency for this queue is actually not useful for deconstruction intermediate write latencies. EventSel=21H UMask=00H Counter=0,1,2,3
UNC_M_WPQ_READ_HIT Counts the number of times a request hits in the WPQ (write-pending queue). The iMC allows writes and reads to pass up other writes to different addresses. Before a read or a write is issued, it will first CAM the WPQ to see if there is a write pending to that address. When reads hit, they are able to directly pull their data from the WPQ instead of going to memory. Writes that hit will overwrite the existing data. Partial writes that hit will not need to do underfill reads and will simply update their relevant sections. EventSel=23H UMask=00H Counter=0,1,2,3
UNC_M_WPQ_WRITE_HIT Counts the number of times a request hits in the WPQ (write-pending queue). The iMC allows writes and reads to pass up other writes to different addresses. Before a read or a write is issued, it will first CAM the WPQ to see if there is a write pending to that address. When reads hit, they are able to directly pull their data from the WPQ instead of going to memory. Writes that hit will overwrite the existing data. Partial writes that hit will not need to do underfill reads and will simply update their relevant sections. EventSel=24H UMask=00H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.ALLBANKS WR_CAS Access to Rank 0; All Banks EventSel=B8H UMask=10H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK0 WR_CAS Access to Rank 0; Bank 0 EventSel=B8H UMask=00H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK1 WR_CAS Access to Rank 0; Bank 1 EventSel=B8H UMask=01H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK10 WR_CAS Access to Rank 0; Bank 10 EventSel=B8H UMask=0AH Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK11 WR_CAS Access to Rank 0; Bank 11 EventSel=B8H UMask=0BH Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK12 WR_CAS Access to Rank 0; Bank 12 EventSel=B8H UMask=0CH Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK13 WR_CAS Access to Rank 0; Bank 13 EventSel=B8H UMask=0DH Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK14 WR_CAS Access to Rank 0; Bank 14 EventSel=B8H UMask=0EH Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK15 WR_CAS Access to Rank 0; Bank 15 EventSel=B8H UMask=0FH Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK2 WR_CAS Access to Rank 0; Bank 2 EventSel=B8H UMask=02H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK3 WR_CAS Access to Rank 0; Bank 3 EventSel=B8H UMask=03H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK4 WR_CAS Access to Rank 0; Bank 4 EventSel=B8H UMask=04H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK5 WR_CAS Access to Rank 0; Bank 5 EventSel=B8H UMask=05H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK6 WR_CAS Access to Rank 0; Bank 6 EventSel=B8H UMask=06H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK7 WR_CAS Access to Rank 0; Bank 7 EventSel=B8H UMask=07H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK8 WR_CAS Access to Rank 0; Bank 8 EventSel=B8H UMask=08H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANK9 WR_CAS Access to Rank 0; Bank 9 EventSel=B8H UMask=09H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANKG0 WR_CAS Access to Rank 0; Bank Group 0 (Banks 0-3) EventSel=B8H UMask=11H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANKG1 WR_CAS Access to Rank 0; Bank Group 1 (Banks 4-7) EventSel=B8H UMask=12H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANKG2 WR_CAS Access to Rank 0; Bank Group 2 (Banks 8-11) EventSel=B8H UMask=13H Counter=0,1,2,3
UNC_M_WR_CAS_RANK0.BANKG3 WR_CAS Access to Rank 0; Bank Group 3 (Banks 12-15) EventSel=B8H UMask=14H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.ALLBANKS WR_CAS Access to Rank 1; All Banks EventSel=B9H UMask=10H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK0 WR_CAS Access to Rank 1; Bank 0 EventSel=B9H UMask=00H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK1 WR_CAS Access to Rank 1; Bank 1 EventSel=B9H UMask=01H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK10 WR_CAS Access to Rank 1; Bank 10 EventSel=B9H UMask=0AH Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK11 WR_CAS Access to Rank 1; Bank 11 EventSel=B9H UMask=0BH Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK12 WR_CAS Access to Rank 1; Bank 12 EventSel=B9H UMask=0CH Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK13 WR_CAS Access to Rank 1; Bank 13 EventSel=B9H UMask=0DH Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK14 WR_CAS Access to Rank 1; Bank 14 EventSel=B9H UMask=0EH Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK15 WR_CAS Access to Rank 1; Bank 15 EventSel=B9H UMask=0FH Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK2 WR_CAS Access to Rank 1; Bank 2 EventSel=B9H UMask=02H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK3 WR_CAS Access to Rank 1; Bank 3 EventSel=B9H UMask=03H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK4 WR_CAS Access to Rank 1; Bank 4 EventSel=B9H UMask=04H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK5 WR_CAS Access to Rank 1; Bank 5 EventSel=B9H UMask=05H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK6 WR_CAS Access to Rank 1; Bank 6 EventSel=B9H UMask=06H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK7 WR_CAS Access to Rank 1; Bank 7 EventSel=B9H UMask=07H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK8 WR_CAS Access to Rank 1; Bank 8 EventSel=B9H UMask=08H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANK9 WR_CAS Access to Rank 1; Bank 9 EventSel=B9H UMask=09H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANKG0 WR_CAS Access to Rank 1; Bank Group 0 (Banks 0-3) EventSel=B9H UMask=11H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANKG1 WR_CAS Access to Rank 1; Bank Group 1 (Banks 4-7) EventSel=B9H UMask=12H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANKG2 WR_CAS Access to Rank 1; Bank Group 2 (Banks 8-11) EventSel=B9H UMask=13H Counter=0,1,2,3
UNC_M_WR_CAS_RANK1.BANKG3 WR_CAS Access to Rank 1; Bank Group 3 (Banks 12-15) EventSel=B9H UMask=14H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.ALLBANKS WR_CAS Access to Rank 4; All Banks EventSel=BCH UMask=10H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK0 WR_CAS Access to Rank 4; Bank 0 EventSel=BCH UMask=00H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK1 WR_CAS Access to Rank 4; Bank 1 EventSel=BCH UMask=01H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK10 WR_CAS Access to Rank 4; Bank 10 EventSel=BCH UMask=0AH Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK11 WR_CAS Access to Rank 4; Bank 11 EventSel=BCH UMask=0BH Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK12 WR_CAS Access to Rank 4; Bank 12 EventSel=BCH UMask=0CH Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK13 WR_CAS Access to Rank 4; Bank 13 EventSel=BCH UMask=0DH Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK14 WR_CAS Access to Rank 4; Bank 14 EventSel=BCH UMask=0EH Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK15 WR_CAS Access to Rank 4; Bank 15 EventSel=BCH UMask=0FH Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK2 WR_CAS Access to Rank 4; Bank 2 EventSel=BCH UMask=02H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK3 WR_CAS Access to Rank 4; Bank 3 EventSel=BCH UMask=03H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK4 WR_CAS Access to Rank 4; Bank 4 EventSel=BCH UMask=04H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK5 WR_CAS Access to Rank 4; Bank 5 EventSel=BCH UMask=05H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK6 WR_CAS Access to Rank 4; Bank 6 EventSel=BCH UMask=06H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK7 WR_CAS Access to Rank 4; Bank 7 EventSel=BCH UMask=07H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK8 WR_CAS Access to Rank 4; Bank 8 EventSel=BCH UMask=08H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANK9 WR_CAS Access to Rank 4; Bank 9 EventSel=BCH UMask=09H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANKG0 WR_CAS Access to Rank 4; Bank Group 0 (Banks 0-3) EventSel=BCH UMask=11H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANKG1 WR_CAS Access to Rank 4; Bank Group 1 (Banks 4-7) EventSel=BCH UMask=12H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANKG2 WR_CAS Access to Rank 4; Bank Group 2 (Banks 8-11) EventSel=BCH UMask=13H Counter=0,1,2,3
UNC_M_WR_CAS_RANK4.BANKG3 WR_CAS Access to Rank 4; Bank Group 3 (Banks 12-15) EventSel=BCH UMask=14H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.ALLBANKS WR_CAS Access to Rank 5; All Banks EventSel=BDH UMask=10H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK0 WR_CAS Access to Rank 5; Bank 0 EventSel=BDH UMask=00H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK1 WR_CAS Access to Rank 5; Bank 1 EventSel=BDH UMask=01H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK10 WR_CAS Access to Rank 5; Bank 10 EventSel=BDH UMask=0AH Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK11 WR_CAS Access to Rank 5; Bank 11 EventSel=BDH UMask=0BH Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK12 WR_CAS Access to Rank 5; Bank 12 EventSel=BDH UMask=0CH Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK13 WR_CAS Access to Rank 5; Bank 13 EventSel=BDH UMask=0DH Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK14 WR_CAS Access to Rank 5; Bank 14 EventSel=BDH UMask=0EH Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK15 WR_CAS Access to Rank 5; Bank 15 EventSel=BDH UMask=0FH Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK2 WR_CAS Access to Rank 5; Bank 2 EventSel=BDH UMask=02H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK3 WR_CAS Access to Rank 5; Bank 3 EventSel=BDH UMask=03H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK4 WR_CAS Access to Rank 5; Bank 4 EventSel=BDH UMask=04H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK5 WR_CAS Access to Rank 5; Bank 5 EventSel=BDH UMask=05H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK6 WR_CAS Access to Rank 5; Bank 6 EventSel=BDH UMask=06H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK7 WR_CAS Access to Rank 5; Bank 7 EventSel=BDH UMask=07H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK8 WR_CAS Access to Rank 5; Bank 8 EventSel=BDH UMask=08H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANK9 WR_CAS Access to Rank 5; Bank 9 EventSel=BDH UMask=09H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANKG0 WR_CAS Access to Rank 5; Bank Group 0 (Banks 0-3) EventSel=BDH UMask=11H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANKG1 WR_CAS Access to Rank 5; Bank Group 1 (Banks 4-7) EventSel=BDH UMask=12H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANKG2 WR_CAS Access to Rank 5; Bank Group 2 (Banks 8-11) EventSel=BDH UMask=13H Counter=0,1,2,3
UNC_M_WR_CAS_RANK5.BANKG3 WR_CAS Access to Rank 5; Bank Group 3 (Banks 12-15) EventSel=BDH UMask=14H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.ALLBANKS WR_CAS Access to Rank 6; All Banks EventSel=BEH UMask=10H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK0 WR_CAS Access to Rank 6; Bank 0 EventSel=BEH UMask=00H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK1 WR_CAS Access to Rank 6; Bank 1 EventSel=BEH UMask=01H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK10 WR_CAS Access to Rank 6; Bank 10 EventSel=BEH UMask=0AH Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK11 WR_CAS Access to Rank 6; Bank 11 EventSel=BEH UMask=0BH Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK12 WR_CAS Access to Rank 6; Bank 12 EventSel=BEH UMask=0CH Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK13 WR_CAS Access to Rank 6; Bank 13 EventSel=BEH UMask=0DH Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK14 WR_CAS Access to Rank 6; Bank 14 EventSel=BEH UMask=0EH Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK15 WR_CAS Access to Rank 6; Bank 15 EventSel=BEH UMask=0FH Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK2 WR_CAS Access to Rank 6; Bank 2 EventSel=BEH UMask=02H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK3 WR_CAS Access to Rank 6; Bank 3 EventSel=BEH UMask=03H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK4 WR_CAS Access to Rank 6; Bank 4 EventSel=BEH UMask=04H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK5 WR_CAS Access to Rank 6; Bank 5 EventSel=BEH UMask=05H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK6 WR_CAS Access to Rank 6; Bank 6 EventSel=BEH UMask=06H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK7 WR_CAS Access to Rank 6; Bank 7 EventSel=BEH UMask=07H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK8 WR_CAS Access to Rank 6; Bank 8 EventSel=BEH UMask=08H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANK9 WR_CAS Access to Rank 6; Bank 9 EventSel=BEH UMask=09H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANKG0 WR_CAS Access to Rank 6; Bank Group 0 (Banks 0-3) EventSel=BEH UMask=11H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANKG1 WR_CAS Access to Rank 6; Bank Group 1 (Banks 4-7) EventSel=BEH UMask=12H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANKG2 WR_CAS Access to Rank 6; Bank Group 2 (Banks 8-11) EventSel=BEH UMask=13H Counter=0,1,2,3
UNC_M_WR_CAS_RANK6.BANKG3 WR_CAS Access to Rank 6; Bank Group 3 (Banks 12-15) EventSel=BEH UMask=14H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.ALLBANKS WR_CAS Access to Rank 7; All Banks EventSel=BFH UMask=10H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK0 WR_CAS Access to Rank 7; Bank 0 EventSel=BFH UMask=00H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK1 WR_CAS Access to Rank 7; Bank 1 EventSel=BFH UMask=01H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK10 WR_CAS Access to Rank 7; Bank 10 EventSel=BFH UMask=0AH Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK11 WR_CAS Access to Rank 7; Bank 11 EventSel=BFH UMask=0BH Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK12 WR_CAS Access to Rank 7; Bank 12 EventSel=BFH UMask=0CH Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK13 WR_CAS Access to Rank 7; Bank 13 EventSel=BFH UMask=0DH Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK14 WR_CAS Access to Rank 7; Bank 14 EventSel=BFH UMask=0EH Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK15 WR_CAS Access to Rank 7; Bank 15 EventSel=BFH UMask=0FH Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK2 WR_CAS Access to Rank 7; Bank 2 EventSel=BFH UMask=02H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK3 WR_CAS Access to Rank 7; Bank 3 EventSel=BFH UMask=03H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK4 WR_CAS Access to Rank 7; Bank 4 EventSel=BFH UMask=04H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK5 WR_CAS Access to Rank 7; Bank 5 EventSel=BFH UMask=05H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK6 WR_CAS Access to Rank 7; Bank 6 EventSel=BFH UMask=06H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK7 WR_CAS Access to Rank 7; Bank 7 EventSel=BFH UMask=07H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK8 WR_CAS Access to Rank 7; Bank 8 EventSel=BFH UMask=08H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANK9 WR_CAS Access to Rank 7; Bank 9 EventSel=BFH UMask=09H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANKG0 WR_CAS Access to Rank 7; Bank Group 0 (Banks 0-3) EventSel=BFH UMask=11H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANKG1 WR_CAS Access to Rank 7; Bank Group 1 (Banks 4-7) EventSel=BFH UMask=12H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANKG2 WR_CAS Access to Rank 7; Bank Group 2 (Banks 8-11) EventSel=BFH UMask=13H Counter=0,1,2,3
UNC_M_WR_CAS_RANK7.BANKG3 WR_CAS Access to Rank 7; Bank Group 3 (Banks 12-15) EventSel=BFH UMask=14H Counter=0,1,2,3
UNC_M_WRONG_MM Not getting the requested Major Mode EventSel=C1H UMask=00H Counter=0,1,2,3
UNC_I_CACHE_TOTAL_OCCUPANCY.ANY Accumulates the number of reads and writes that are outstanding in the uncore in each cycle. This is effectively the sum of the READ_OCCUPANCY and WRITE_OCCUPANCY events.; Tracks all requests from any source port. EventSel=12H UMask=01H Counter=0,1
UNC_I_CACHE_TOTAL_OCCUPANCY.SOURCE Accumulates the number of reads and writes that are outstanding in the uncore in each cycle. This is effectively the sum of the READ_OCCUPANCY and WRITE_OCCUPANCY events.; Tracks only those requests that come from the port specified in the IRP_PmonFilter.OrderingQ register. This register allows one to select one specific queue. It is not possible to monitor multiple queues at a time. EventSel=12H UMask=02H Counter=0,1
UNC_I_CLOCKTICKS Number of clocks in the IRP. EventSel=00H UMask=00H Counter=0,1
UNC_I_COHERENT_OPS.CLFLUSH Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=80H Counter=0,1
UNC_I_COHERENT_OPS.CRD Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=02H Counter=0,1
UNC_I_COHERENT_OPS.DRD Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=04H Counter=0,1
UNC_I_COHERENT_OPS.PCIDCAHINT Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=20H Counter=0,1
UNC_I_COHERENT_OPS.PCIRDCUR Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=01H Counter=0,1
UNC_I_COHERENT_OPS.PCITOM Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=10H Counter=0,1
UNC_I_COHERENT_OPS.RFO Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=08H Counter=0,1
UNC_I_COHERENT_OPS.WBMTOI Counts the number of coherency related operations serviced by the IRP EventSel=13H UMask=40H Counter=0,1
UNC_I_MISC0.2ND_ATOMIC_INSERT Misc Events - Set 0; Cache Inserts of Atomic Transactions as Secondary EventSel=14H UMask=10H Counter=0,1
UNC_I_MISC0.2ND_RD_INSERT Misc Events - Set 0; Cache Inserts of Read Transactions as Secondary EventSel=14H UMask=04H Counter=0,1
UNC_I_MISC0.2ND_WR_INSERT Misc Events - Set 0; Cache Inserts of Write Transactions as Secondary EventSel=14H UMask=08H Counter=0,1
UNC_I_MISC0.FAST_REJ Misc Events - Set 0; Fastpath Rejects EventSel=14H UMask=02H Counter=0,1
UNC_I_MISC0.FAST_REQ Misc Events - Set 0; Fastpath Requests EventSel=14H UMask=01H Counter=0,1
UNC_I_MISC0.FAST_XFER Misc Events - Set 0; Fastpath Transfers From Primary to Secondary EventSel=14H UMask=20H Counter=0,1
UNC_I_MISC0.PF_ACK_HINT Misc Events - Set 0; Prefetch Ack Hints From Primary to Secondary EventSel=14H UMask=40H Counter=0,1
UNC_I_MISC0.PF_TIMEOUT Indicates the fetch for a previous prefetch wasn't accepted by the prefetch. This happens in the case of a prefetch TimeOut EventSel=14H UMask=80H Counter=0,1
UNC_I_MISC1.DATA_THROTTLE IRP throttled switch data EventSel=15H UMask=80H Counter=0,1
UNC_I_MISC1.LOST_FWD Misc Events - Set 1 EventSel=15H UMask=10H Counter=0,1
UNC_I_MISC1.SEC_RCVD_INVLD Secondary received a transfer that did not have sufficient MESI state EventSel=15H UMask=20H Counter=0,1
UNC_I_MISC1.SEC_RCVD_VLD Secondary received a transfer that did have sufficient MESI state EventSel=15H UMask=40H Counter=0,1
UNC_I_MISC1.SLOW_E Secondary received a transfer that did have sufficient MESI state EventSel=15H UMask=04H Counter=0,1
UNC_I_MISC1.SLOW_I Snoop took cacheline ownership before write from data was committed. EventSel=15H UMask=01H Counter=0,1
UNC_I_MISC1.SLOW_M Snoop took cacheline ownership before write from data was committed. EventSel=15H UMask=08H Counter=0,1
UNC_I_MISC1.SLOW_S Secondary received a transfer that did not have sufficient MESI state EventSel=15H UMask=02H Counter=0,1
UNC_I_RxR_AK_INSERTS Counts the number of allocations into the AK Ingress. This queue is where the IRP receives responses from R2PCIe (the ring). EventSel=0AH UMask=00H Counter=0,1
UNC_I_RxR_BL_DRS_CYCLES_FULL Counts the number of cycles when the BL Ingress is full. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=04H UMask=00H Counter=0,1
UNC_I_RxR_BL_DRS_INSERTS Counts the number of allocations into the BL Ingress. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=01H UMask=00H Counter=0,1
UNC_I_RxR_BL_DRS_OCCUPANCY Accumulates the occupancy of the BL Ingress in each cycles. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=07H UMask=00H Counter=0,1
UNC_I_RxR_BL_NCB_CYCLES_FULL Counts the number of cycles when the BL Ingress is full. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=05H UMask=00H Counter=0,1
UNC_I_RxR_BL_NCB_INSERTS Counts the number of allocations into the BL Ingress. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=02H UMask=00H Counter=0,1
UNC_I_RxR_BL_NCB_OCCUPANCY Accumulates the occupancy of the BL Ingress in each cycles. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=08H UMask=00H Counter=0,1
UNC_I_RxR_BL_NCS_CYCLES_FULL Counts the number of cycles when the BL Ingress is full. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=06H UMask=00H Counter=0,1
UNC_I_RxR_BL_NCS_INSERTS Counts the number of allocations into the BL Ingress. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=03H UMask=00H Counter=0,1
UNC_I_RxR_BL_NCS_OCCUPANCY Accumulates the occupancy of the BL Ingress in each cycles. This queue is where the IRP receives data from R2PCIe (the ring). It is used for data returns from read requests as well as outbound MMIO writes. EventSel=09H UMask=00H Counter=0,1
UNC_I_SNOOP_RESP.HIT_ES Snoop Responses; Hit E or S EventSel=17H UMask=04H Counter=0,1
UNC_I_SNOOP_RESP.HIT_I Snoop Responses; Hit I EventSel=17H UMask=02H Counter=0,1
UNC_I_SNOOP_RESP.HIT_M Snoop Responses; Hit M EventSel=17H UMask=08H Counter=0,1
UNC_I_SNOOP_RESP.MISS Snoop Responses; Miss EventSel=17H UMask=01H Counter=0,1
UNC_I_SNOOP_RESP.SNPCODE Snoop Responses; SnpCode EventSel=17H UMask=10H Counter=0,1
UNC_I_SNOOP_RESP.SNPDATA Snoop Responses; SnpData EventSel=17H UMask=20H Counter=0,1
UNC_I_SNOOP_RESP.SNPINV Snoop Responses; SnpInv EventSel=17H UMask=40H Counter=0,1
UNC_I_TRANSACTIONS.ATOMIC Counts the number of "Inbound" transactions from the IRP to the Uncore. This can be filtered based on request type in addition to the source queue. Note the special filtering equation. We do OR-reduction on the request type. If the SOURCE bit is set, then we also do AND qualification based on the source portID.; Tracks the number of atomic transactions EventSel=16H UMask=10H Counter=0,1
UNC_I_TRANSACTIONS.ORDERINGQ Counts the number of "Inbound" transactions from the IRP to the Uncore. This can be filtered based on request type in addition to the source queue. Note the special filtering equation. We do OR-reduction on the request type. If the SOURCE bit is set, then we also do AND qualification based on the source portID.; Tracks only those requests that come from the port specified in the IRP_PmonFilter.OrderingQ register. This register allows one to select one specific queue. It is not possible to monitor multiple queues at a time. If this bit is not set, then requests from all sources will be counted. EventSel=16H UMask=40H Counter=0,1
UNC_I_TRANSACTIONS.OTHER Counts the number of "Inbound" transactions from the IRP to the Uncore. This can be filtered based on request type in addition to the source queue. Note the special filtering equation. We do OR-reduction on the request type. If the SOURCE bit is set, then we also do AND qualification based on the source portID.; Tracks the number of 'other' kinds of transactions. EventSel=16H UMask=20H Counter=0,1
UNC_I_TRANSACTIONS.RD_PREF Counts the number of "Inbound" transactions from the IRP to the Uncore. This can be filtered based on request type in addition to the source queue. Note the special filtering equation. We do OR-reduction on the request type. If the SOURCE bit is set, then we also do AND qualification based on the source portID.; Tracks the number of read prefetches. EventSel=16H UMask=04H Counter=0,1
UNC_I_TRANSACTIONS.READS Counts the number of "Inbound" transactions from the IRP to the Uncore. This can be filtered based on request type in addition to the source queue. Note the special filtering equation. We do OR-reduction on the request type. If the SOURCE bit is set, then we also do AND qualification based on the source portID.; Tracks only read requests (not including read prefetches). EventSel=16H UMask=01H Counter=0,1
UNC_I_TRANSACTIONS.WR_PREF Counts the number of "Inbound" transactions from the IRP to the Uncore. This can be filtered based on request type in addition to the source queue. Note the special filtering equation. We do OR-reduction on the request type. If the SOURCE bit is set, then we also do AND qualification based on the source portID.; Tracks the number of write prefetches. EventSel=16H UMask=08H Counter=0,1
UNC_I_TRANSACTIONS.WRITES Counts the number of "Inbound" transactions from the IRP to the Uncore. This can be filtered based on request type in addition to the source queue. Note the special filtering equation. We do OR-reduction on the request type. If the SOURCE bit is set, then we also do AND qualification based on the source portID.; Tracks only write requests. Each write request should have a prefetch, so there is no need to explicitly track these requests. EventSel=16H UMask=02H Counter=0,1
UNC_I_TxR_AD_STALL_CREDIT_CYCLES Counts the number times when it is not possible to issue a request to the R2PCIe because there are no AD Egress Credits available. EventSel=18H UMask=00H Counter=0,1
UNC_I_TxR_BL_STALL_CREDIT_CYCLES Counts the number times when it is not possible to issue data to the R2PCIe because there are no BL Egress Credits available. EventSel=19H UMask=00H Counter=0,1
UNC_I_TxR_DATA_INSERTS_NCB Counts the number of requests issued to the switch (towards the devices). EventSel=0EH UMask=00H Counter=0,1
UNC_I_TxR_DATA_INSERTS_NCS Counts the number of requests issued to the switch (towards the devices). EventSel=0FH UMask=00H Counter=0,1
UNC_I_TxR_REQUEST_OCCUPANCY Accumulates the number of outstanding outbound requests from the IRP to the switch (towards the devices). This can be used in conjunction with the allocations event in order to calculate average latency of outbound requests. EventSel=0DH UMask=00H Counter=0,1
UNC_P_CLOCKTICKS The PCU runs off a fixed 1 GHz clock. This event counts the number of pclk cycles measured while the counter was enabled. The pclk, like the Memory Controller's dclk, counts at a constant rate making it a good measure of actual wall time. EventSel=00H UMask=00H Counter=0,1,2,3
UNC_P_CORE0_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=60H UMask=00H Counter=0,1,2,3
UNC_P_CORE1_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=61H UMask=00H Counter=0,1,2,3
UNC_P_CORE10_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=6AH UMask=00H Counter=0,1,2,3
UNC_P_CORE11_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=6BH UMask=00H Counter=0,1,2,3
UNC_P_CORE12_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=6CH UMask=00H Counter=0,1,2,3
UNC_P_CORE13_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=6DH UMask=00H Counter=0,1,2,3
UNC_P_CORE14_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=6EH UMask=00H Counter=0,1,2,3
UNC_P_CORE15_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=6FH UMask=00H Counter=0,1,2,3
UNC_P_CORE16_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=70H UMask=00H Counter=0,1,2,3
UNC_P_CORE17_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=71H UMask=00H Counter=0,1,2,3
UNC_P_CORE2_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=62H UMask=00H Counter=0,1,2,3
UNC_P_CORE3_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=63H UMask=00H Counter=0,1,2,3
UNC_P_CORE4_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=64H UMask=00H Counter=0,1,2,3
UNC_P_CORE5_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=65H UMask=00H Counter=0,1,2,3
UNC_P_CORE6_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=66H UMask=00H Counter=0,1,2,3
UNC_P_CORE7_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=67H UMask=00H Counter=0,1,2,3
UNC_P_CORE8_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=68H UMask=00H Counter=0,1,2,3
UNC_P_CORE9_TRANSITION_CYCLES Number of cycles spent performing core C state transitions. There is one event per core. EventSel=69H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE0 Counts the number of times when a configurable cores had a C-state demotion EventSel=30H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE1 Counts the number of times when a configurable cores had a C-state demotion EventSel=31H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE10 Counts the number of times when a configurable cores had a C-state demotion EventSel=3AH UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE11 Counts the number of times when a configurable cores had a C-state demotion EventSel=3BH UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE12 Counts the number of times when a configurable cores had a C-state demotion EventSel=3CH UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE13 Counts the number of times when a configurable cores had a C-state demotion EventSel=3DH UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE14 Counts the number of times when a configurable cores had a C-state demotion EventSel=3EH UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE15 Counts the number of times when a configurable cores had a C-state demotion EventSel=3FH UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE16 Counts the number of times when a configurable cores had a C-state demotion EventSel=40H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE17 Counts the number of times when a configurable cores had a C-state demotion EventSel=41H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE2 Counts the number of times when a configurable cores had a C-state demotion EventSel=32H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE3 Counts the number of times when a configurable cores had a C-state demotion EventSel=33H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE4 Counts the number of times when a configurable cores had a C-state demotion EventSel=34H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE5 Counts the number of times when a configurable cores had a C-state demotion EventSel=35H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE6 Counts the number of times when a configurable cores had a C-state demotion EventSel=36H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE7 Counts the number of times when a configurable cores had a C-state demotion EventSel=37H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE8 Counts the number of times when a configurable cores had a C-state demotion EventSel=38H UMask=00H Counter=0,1,2,3
UNC_P_DEMOTIONS_CORE9 Counts the number of times when a configurable cores had a C-state demotion EventSel=39H UMask=00H Counter=0,1,2,3
UNC_P_FREQ_MAX_LIMIT_THERMAL_CYCLES Counts the number of cycles when thermal conditions are the upper limit on frequency. This is related to the THERMAL_THROTTLE CYCLES_ABOVE_TEMP event, which always counts cycles when we are above the thermal temperature. This event (STRONGEST_UPPER_LIMIT) is sampled at the output of the algorithm that determines the actual frequency, while THERMAL_THROTTLE looks at the input. EventSel=04H UMask=00H Counter=0,1,2,3
UNC_P_FREQ_MAX_OS_CYCLES Counts the number of cycles when the OS is the upper limit on frequency. EventSel=06H UMask=00H Counter=0,1,2,3
UNC_P_FREQ_MAX_POWER_CYCLES Counts the number of cycles when power is the upper limit on frequency. EventSel=05H UMask=00H Counter=0,1,2,3
UNC_P_FREQ_MIN_IO_P_CYCLES Counts the number of cycles when IO P Limit is preventing us from dropping the frequency lower. This algorithm monitors the needs to the IO subsystem on both local and remote sockets and will maintain a frequency high enough to maintain good IO BW. This is necessary for when all the IA cores on a socket are idle but a user still would like to maintain high IO Bandwidth. EventSel=73H UMask=00H Counter=0,1,2,3
UNC_P_FREQ_TRANS_CYCLES Counts the number of cycles when the system is changing frequency. This can not be filtered by thread ID. One can also use it with the occupancy counter that monitors number of threads in C0 to estimate the performance impact that frequency transitions had on the system. EventSel=74H UMask=00H Counter=0,1,2,3
UNC_P_MEMORY_PHASE_SHEDDING_CYCLES Counts the number of cycles that the PCU has triggered memory phase shedding. This is a mode that can be run in the iMC physicals that saves power at the expense of additional latency. EventSel=2FH UMask=00H Counter=0,1,2,3
UNC_P_PKG_RESIDENCY_C0_CYCLES Counts the number of cycles when the package was in C0. This event can be used in conjunction with edge detect to count C0 entrances (or exits using invert). Residency events do not include transition times. EventSel=2AH UMask=00H Counter=0,1,2,3
UNC_P_PKG_RESIDENCY_C1E_CYCLES Counts the number of cycles when the package was in C1E. This event can be used in conjunction with edge detect to count C1E entrances (or exits using invert). Residency events do not include transition times. EventSel=4EH UMask=00H Counter=0,1,2,3
UNC_P_PKG_RESIDENCY_C2E_CYCLES Counts the number of cycles when the package was in C2E. This event can be used in conjunction with edge detect to count C2E entrances (or exits using invert). Residency events do not include transition times. EventSel=2BH UMask=00H Counter=0,1,2,3
UNC_P_PKG_RESIDENCY_C3_CYCLES Counts the number of cycles when the package was in C3. This event can be used in conjunction with edge detect to count C3 entrances (or exits using invert). Residency events do not include transition times. EventSel=2CH UMask=00H Counter=0,1,2,3
UNC_P_PKG_RESIDENCY_C6_CYCLES Counts the number of cycles when the package was in C6. This event can be used in conjunction with edge detect to count C6 entrances (or exits using invert). Residency events do not include transition times. EventSel=2DH UMask=00H Counter=0,1,2,3
UNC_P_PKG_RESIDENCY_C7_CYCLES Counts the number of cycles when the package was in C7. This event can be used in conjunction with edge detect to count C7 entrances (or exits using invert). Residency events do not include transition times. EventSel=2EH UMask=00H Counter=0,1,2,3
UNC_P_POWER_STATE_OCCUPANCY.CORES_C0 This is an occupancy event that tracks the number of cores that are in the chosen C-State. It can be used by itself to get the average number of cores in that C-state with thresholding to generate histograms, or with other PCU events and occupancy triggering to capture other details. EventSel=80H UMask=40H Counter=0,1,2,3
UNC_P_POWER_STATE_OCCUPANCY.CORES_C3 This is an occupancy event that tracks the number of cores that are in the chosen C-State. It can be used by itself to get the average number of cores in that C-state with thresholding to generate histograms, or with other PCU events and occupancy triggering to capture other details. EventSel=80H UMask=80H Counter=0,1,2,3
UNC_P_POWER_STATE_OCCUPANCY.CORES_C6 This is an occupancy event that tracks the number of cores that are in the chosen C-State. It can be used by itself to get the average number of cores in that C-state with thresholding to generate histograms, or with other PCU events and occupancy triggering to capture other details. EventSel=80H UMask=C0H Counter=0,1,2,3
UNC_P_PROCHOT_EXTERNAL_CYCLES Counts the number of cycles that we are in external PROCHOT mode. This mode is triggered when a sensor off the die determines that something off-die (like DRAM) is too hot and must throttle to avoid damaging the chip. EventSel=0AH UMask=00H Counter=0,1,2,3
UNC_P_PROCHOT_INTERNAL_CYCLES Counts the number of cycles that we are in Internal PROCHOT mode. This mode is triggered when a sensor on the die determines that we are too hot and must throttle to avoid damaging the chip. EventSel=09H UMask=00H Counter=0,1,2,3
UNC_P_TOTAL_TRANSITION_CYCLES Number of cycles spent performing core C state transitions across all cores. EventSel=72H UMask=00H Counter=0,1,2,3
UNC_P_UFS_TRANSITIONS_RING_GV Ring GV with same final and initial frequency EventSel=79H UMask=00H Counter=0,1,2,3
UNC_P_VR_HOT_CYCLES VR Hot EventSel=42H UMask=00H Counter=0,1,2,3
UNC_Q_CLOCKTICKS Counts the number of clocks in the QPI LL. This clock runs at 1/4th the "GT/s" speed of the QPI link. For example, a 4GT/s link will have qfclk or 1GHz. BDX does not support dynamic link speeds, so this frequency is fixed. EventSel=14H UMask=00H Counter=0,1,2,3
UNC_Q_CTO_COUNT Counts the number of CTO (cluster trigger outs) events that were asserted across the two slots. If both slots trigger in a given cycle, the event will increment by 2. You can use edge detect to count the number of cases when both events triggered. EventSel=38H UMask=00H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.FAILURE_CREDITS Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn failed because there were not enough Egress credits. Had there been enough credits, the spawn would have worked as the RBT bit was set and the RBT tag matched. EventSel=13H UMask=02H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.FAILURE_CREDITS_MISS Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn failed because the RBT tag did not match and there weren't enough Egress credits. The valid bit was set. EventSel=13H UMask=20H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.FAILURE_CREDITS_RBT Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn failed because there were not enough Egress credits AND the RBT bit was not set, but the RBT tag matched. EventSel=13H UMask=08H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.FAILURE_CREDITS_RBT_MISS Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn failed because the RBT tag did not match, the valid bit was not set and there weren't enough Egress credits. EventSel=13H UMask=80H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.FAILURE_MISS Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn failed because the RBT tag did not match although the valid bit was set and there were enough Egress credits. EventSel=13H UMask=10H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.FAILURE_RBT_HIT Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn failed because the route-back table (RBT) specified that the transaction should not trigger a direct2core transaction. This is common for IO transactions. There were enough Egress credits and the RBT tag matched but the valid bit was not set. EventSel=13H UMask=04H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.FAILURE_RBT_MISS Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn failed because the RBT tag did not match and the valid bit was not set although there were enough Egress credits. EventSel=13H UMask=40H Counter=0,1,2,3
UNC_Q_DIRECT2CORE.SUCCESS_RBT_HIT Counts the number of DRS packets that we attempted to do direct2core on. There are 4 mutually exclusive filters. Filter [0] can be used to get successful spawns, while [1:3] provide the different failure cases. Note that this does not count packets that are not candidates for Direct2Core. The only candidates for Direct2Core are DRS packets destined for Cbos.; The spawn was successful. There were sufficient credits, the RBT valid bit was set and there was an RBT tag match. The message was marked to spawn direct2core. EventSel=13H UMask=01H Counter=0,1,2,3
UNC_Q_L1_POWER_CYCLES Number of QPI qfclk cycles spent in L1 power mode. L1 is a mode that totally shuts down a QPI link. Use edge detect to count the number of instances when the QPI link entered L1. Link power states are per link and per direction, so for example the Tx direction could be in one state while Rx was in another. Because L1 totally shuts down the link, it takes a good amount of time to exit this mode. EventSel=12H UMask=00H Counter=0,1,2,3
UNC_Q_RxL_BYPASSED Counts the number of times that an incoming flit was able to bypass the flit buffer and pass directly across the BGF and into the Egress. This is a latency optimization, and should generally be the common case. If this value is less than the number of flits transferred, it implies that there was queueing getting onto the ring, and thus the transactions saw higher latency. EventSel=09H UMask=00H Counter=0,1,2,3
UNC_Q_RxL_CRC_ERRORS.LINK_INIT Number of CRC errors detected in the QPI Agent. Each QPI flit incorporates 8 bits of CRC for error detection. This counts the number of flits where the CRC was able to detect an error. After an error has been detected, the QPI agent will send a request to the transmitting socket to resend the flit (as well as any flits that came after it).; CRC errors detected during link initialization. EventSel=03H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CRC_ERRORS.NORMAL_OP UNC_Q_RxL_CRC_ERRORS.NORMAL_OP EventSel=03H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN0.DRS Counts the number of times that an RxQ VN0 credit was consumed (i.e. message uses a VN0 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN0 credit for the DRS message class. EventSel=1EH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN0.HOM Counts the number of times that an RxQ VN0 credit was consumed (i.e. message uses a VN0 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN0 credit for the HOM message class. EventSel=1EH UMask=08H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN0.NCB Counts the number of times that an RxQ VN0 credit was consumed (i.e. message uses a VN0 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN0 credit for the NCB message class. EventSel=1EH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN0.NCS Counts the number of times that an RxQ VN0 credit was consumed (i.e. message uses a VN0 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN0 credit for the NCS message class. EventSel=1EH UMask=04H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN0.NDR Counts the number of times that an RxQ VN0 credit was consumed (i.e. message uses a VN0 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN0 credit for the NDR message class. EventSel=1EH UMask=20H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN0.SNP Counts the number of times that an RxQ VN0 credit was consumed (i.e. message uses a VN0 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN0 credit for the SNP message class. EventSel=1EH UMask=10H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN1.DRS Counts the number of times that an RxQ VN1 credit was consumed (i.e. message uses a VN1 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN1 credit for the DRS message class. EventSel=39H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN1.HOM Counts the number of times that an RxQ VN1 credit was consumed (i.e. message uses a VN1 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN1 credit for the HOM message class. EventSel=39H UMask=08H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN1.NCB Counts the number of times that an RxQ VN1 credit was consumed (i.e. message uses a VN1 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN1 credit for the NCB message class. EventSel=39H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN1.NCS Counts the number of times that an RxQ VN1 credit was consumed (i.e. message uses a VN1 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN1 credit for the NCS message class. EventSel=39H UMask=04H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN1.NDR Counts the number of times that an RxQ VN1 credit was consumed (i.e. message uses a VN1 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN1 credit for the NDR message class. EventSel=39H UMask=20H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VN1.SNP Counts the number of times that an RxQ VN1 credit was consumed (i.e. message uses a VN1 credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed.; VN1 credit for the SNP message class. EventSel=39H UMask=10H Counter=0,1,2,3
UNC_Q_RxL_CREDITS_CONSUMED_VNA Counts the number of times that an RxQ VNA credit was consumed (i.e. message uses a VNA credit for the Rx Buffer). This includes packets that went through the RxQ and those that were bypasssed. EventSel=1DH UMask=00H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. EventSel=0AH UMask=00H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_DRS.VN0 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors DRS flits only. EventSel=0FH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_DRS.VN1 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors DRS flits only. EventSel=0FH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_HOM.VN0 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors HOM flits only. EventSel=12H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_HOM.VN1 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors HOM flits only. EventSel=12H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_NCB.VN0 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors NCB flits only. EventSel=10H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_NCB.VN1 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors NCB flits only. EventSel=10H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_NCS.VN0 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors NCS flits only. EventSel=11H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_NCS.VN1 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors NCS flits only. EventSel=11H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_NDR.VN0 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors NDR flits only. EventSel=14H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_NDR.VN1 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors NDR flits only. EventSel=14H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_SNP.VN0 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors SNP flits only. EventSel=13H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_CYCLES_NE_SNP.VN1 Counts the number of cycles that the QPI RxQ was not empty. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy Accumulator event to calculate the average occupancy. This monitors SNP flits only. EventSel=13H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G0.IDLE Counts the number of flits received from the QPI Link. It includes filters for Idle, protocol, and Data Flits. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time (for L0) or 4B instead of 8B for L0p.; Number of flits received over QPI that do not hold protocol payload. When QPI is not in a power saving state, it continuously transmits flits across the link. When there are no protocol flits to send, it will send IDLE and NULL flits across. These flits sometimes do carry a payload, such as credit returns, but are generally not considered part of the QPI bandwidth. EventSel=01H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G1.DRS Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of flits received over QPI on the DRS (Data Response) channel. DRS flits are used to transmit data with coherency. This does not count data flits received over the NCB channel which transmits non-coherent data. EventSel=02H UMask=18H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G1.DRS_DATA Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of data flits received over QPI on the DRS (Data Response) channel. DRS flits are used to transmit data with coherency. This does not count data flits received over the NCB channel which transmits non-coherent data. This includes only the data flits (not the header). EventSel=02H UMask=08H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G1.DRS_NONDATA Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of protocol flits received over QPI on the DRS (Data Response) channel. DRS flits are used to transmit data with coherency. This does not count data flits received over the NCB channel which transmits non-coherent data. This includes only the header flits (not the data). This includes extended headers. EventSel=02H UMask=10H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G1.HOM Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of flits received over QPI on the home channel. EventSel=02H UMask=06H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G1.HOM_NONREQ Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of non-request flits received over QPI on the home channel. These are most commonly snoop responses, and this event can be used as a proxy for that. EventSel=02H UMask=04H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G1.HOM_REQ Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of data request received over QPI on the home channel. This basically counts the number of remote memory requests received over QPI. In conjunction with the local read count in the Home Agent, one can calculate the number of LLC Misses. EventSel=02H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G1.SNP Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of snoop request flits received over QPI. These requests are contained in the snoop channel. This does not include snoop responses, which are received on the home channel. EventSel=02H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G2.NCB Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of Non-Coherent Bypass flits. These packets are generally used to transmit non-coherent data across QPI. EventSel=03H UMask=0CH Counter=0,1,2,3
UNC_Q_RxL_FLITS_G2.NCB_DATA Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of Non-Coherent Bypass data flits. These flits are generally used to transmit non-coherent data across QPI. This does not include a count of the DRS (coherent) data flits. This only counts the data flits, not the NCB headers. EventSel=03H UMask=04H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G2.NCB_NONDATA Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of Non-Coherent Bypass non-data flits. These packets are generally used to transmit non-coherent data across QPI, and the flits counted here are for headers and other non-data flits. This includes extended headers. EventSel=03H UMask=08H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G2.NCS Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of NCS (non-coherent standard) flits received over QPI. This includes extended headers. EventSel=03H UMask=10H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G2.NDR_AD Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of flits received over the NDR (Non-Data Response) channel. This channel is used to send a variety of protocol flits including grants and completions. This is only for NDR packets to the local socket which use the AK ring. EventSel=03H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_FLITS_G2.NDR_AK Counts the number of flits received from the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of flits received over the NDR (Non-Data Response) channel. This channel is used to send a variety of protocol flits including grants and completions. This is only for NDR packets destined for Route-thru to a remote socket. EventSel=03H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_INSERTS Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. EventSel=08H UMask=00H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_DRS.VN0 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only DRS flits. EventSel=09H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_DRS.VN1 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only DRS flits. EventSel=09H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_HOM.VN0 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only HOM flits. EventSel=0CH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_HOM.VN1 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only HOM flits. EventSel=0CH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_NCB.VN0 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only NCB flits. EventSel=0AH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_NCB.VN1 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only NCB flits. EventSel=0AH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_NCS.VN0 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only NCS flits. EventSel=0BH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_NCS.VN1 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only NCS flits. EventSel=0BH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_NDR.VN0 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only NDR flits. EventSel=0EH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_NDR.VN1 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only NDR flits. EventSel=0EH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_SNP.VN0 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only SNP flits. EventSel=0DH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_INSERTS_SNP.VN1 Number of allocations into the QPI Rx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. This monitors only SNP flits. EventSel=0DH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. EventSel=0BH UMask=00H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_DRS.VN0 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors DRS flits only. EventSel=15H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_DRS.VN1 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors DRS flits only. EventSel=15H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_HOM.VN0 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors HOM flits only. EventSel=18H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_HOM.VN1 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors HOM flits only. EventSel=18H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_NCB.VN0 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors NCB flits only. EventSel=16H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_NCB.VN1 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors NCB flits only. EventSel=16H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_NCS.VN0 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors NCS flits only. EventSel=17H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_NCS.VN1 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors NCS flits only. EventSel=17H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_NDR.VN0 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors NDR flits only. EventSel=1AH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_NDR.VN1 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors NDR flits only. EventSel=1AH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_SNP.VN0 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors SNP flits only. EventSel=19H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_OCCUPANCY_SNP.VN1 Accumulates the number of elements in the QPI RxQ in each cycle. Generally, when data is transmitted across QPI, it will bypass the RxQ and pass directly to the ring interface. If things back up getting transmitted onto the ring, however, it may need to allocate into this buffer, thus increasing the latency. This event can be used in conjunction with the Flit Buffer Not Empty event to calculate average occupancy, or with the Flit Buffer Allocations event to track average lifetime. This monitors SNP flits only. EventSel=19H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.BGF_DRS Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled a packet from the HOM message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=35H UMask=01H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.BGF_HOM Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled a packet from the DRS message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=35H UMask=08H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.BGF_NCB Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled a packet from the SNP message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=35H UMask=02H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.BGF_NCS Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled a packet from the NDR message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=35H UMask=04H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.BGF_NDR Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled a packet from the NCS message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=35H UMask=20H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.BGF_SNP Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled a packet from the NCB message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=35H UMask=10H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.EGRESS_CREDITS Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled a packet because there were insufficient BGF credits. For details on a message class granularity, use the Egress Credit Occupancy events. EventSel=35H UMask=40H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN0.GV Number of stalls trying to send to R3QPI on Virtual Network 0; Stalled because a GV transition (frequency transition) was taking place. EventSel=35H UMask=80H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN1.BGF_DRS Number of stalls trying to send to R3QPI on Virtual Network 1.; Stalled a packet from the HOM message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=3AH UMask=01H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN1.BGF_HOM Number of stalls trying to send to R3QPI on Virtual Network 1.; Stalled a packet from the DRS message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=3AH UMask=08H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN1.BGF_NCB Number of stalls trying to send to R3QPI on Virtual Network 1.; Stalled a packet from the SNP message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=3AH UMask=02H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN1.BGF_NCS Number of stalls trying to send to R3QPI on Virtual Network 1.; Stalled a packet from the NDR message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=3AH UMask=04H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN1.BGF_NDR Number of stalls trying to send to R3QPI on Virtual Network 1.; Stalled a packet from the NCS message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=3AH UMask=20H Counter=0,1,2,3
UNC_Q_RxL_STALLS_VN1.BGF_SNP Number of stalls trying to send to R3QPI on Virtual Network 1.; Stalled a packet from the NCB message class because there were not enough BGF credits. In bypass mode, we will stall on the packet boundary, while in RxQ mode we will stall on the flit boundary. EventSel=3AH UMask=10H Counter=0,1,2,3
UNC_Q_RxL0_POWER_CYCLES Number of QPI qfclk cycles spent in L0 power mode in the Link Layer. L0 is the default mode which provides the highest performance with the most power. Use edge detect to count the number of instances that the link entered L0. Link power states are per link and per direction, so for example the Tx direction could be in one state while Rx was in another. The phy layer sometimes leaves L0 for training, which will not be captured by this event. EventSel=0FH UMask=00H Counter=0,1,2,3
UNC_Q_RxL0P_POWER_CYCLES Number of QPI qfclk cycles spent in L0p power mode. L0p is a mode where we disable 1/2 of the QPI lanes, decreasing our bandwidth in order to save power. It increases snoop and data transfer latencies and decreases overall bandwidth. This mode can be very useful in NUMA optimized workloads that largely only utilize QPI for snoops and their responses. Use edge detect to count the number of instances when the QPI link entered L0p. Link power states are per link and per direction, so for example the Tx direction could be in one state while Rx was in another. EventSel=10H UMask=00H Counter=0,1,2,3
UNC_Q_TxL_BYPASSED Counts the number of times that an incoming flit was able to bypass the Tx flit buffer and pass directly out the QPI Link. Generally, when data is transmitted across QPI, it will bypass the TxQ and pass directly to the link. However, the TxQ will be used with L0p and when LLR occurs, increasing latency to transfer out to the link. EventSel=05H UMask=00H Counter=0,1,2,3
UNC_Q_TxL_CRC_NO_CREDITS.ALMOST_FULL Number of cycles when the Tx side ran out of Link Layer Retry credits, causing the Tx to stall.; When LLR is almost full, we block some but not all packets. EventSel=02H UMask=02H Counter=0,1,2,3
UNC_Q_TxL_CRC_NO_CREDITS.FULL Number of cycles when the Tx side ran out of Link Layer Retry credits, causing the Tx to stall.; When LLR is totally full, we are not allowed to send any packets. EventSel=02H UMask=01H Counter=0,1,2,3
UNC_Q_TxL_CYCLES_NE Counts the number of cycles when the TxQ is not empty. Generally, when data is transmitted across QPI, it will bypass the TxQ and pass directly to the link. However, the TxQ will be used with L0p and when LLR occurs, increasing latency to transfer out to the link. EventSel=06H UMask=00H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G0.DATA Counts the number of flits transmitted across the QPI Link. It includes filters for Idle, protocol, and Data Flits. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time (for L0) or 4B instead of 8B for L0p.; Number of data flits transmitted over QPI. Each flit contains 64b of data. This includes both DRS and NCB data flits (coherent and non-coherent). This can be used to calculate the data bandwidth of the QPI link. One can get a good picture of the QPI-link characteristics by evaluating the protocol flits, data flits, and idle/null flits. This does not include the header flits that go in data packets. EventSel=00H UMask=02H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G0.NON_DATA Counts the number of flits transmitted across the QPI Link. It includes filters for Idle, protocol, and Data Flits. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time (for L0) or 4B instead of 8B for L0p.; Number of non-NULL non-data flits transmitted across QPI. This basically tracks the protocol overhead on the QPI link. One can get a good picture of the QPI-link characteristics by evaluating the protocol flits, data flits, and idle/null flits. This includes the header flits for data packets. EventSel=00H UMask=04H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G1.DRS Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of flits transmitted over QPI on the DRS (Data Response) channel. DRS flits are used to transmit data with coherency. EventSel=00H UMask=18H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G1.DRS_DATA Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of data flits transmitted over QPI on the DRS (Data Response) channel. DRS flits are used to transmit data with coherency. This does not count data flits transmitted over the NCB channel which transmits non-coherent data. This includes only the data flits (not the header). EventSel=00H UMask=08H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G1.DRS_NONDATA Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of protocol flits transmitted over QPI on the DRS (Data Response) channel. DRS flits are used to transmit data with coherency. This does not count data flits transmitted over the NCB channel which transmits non-coherent data. This includes only the header flits (not the data). This includes extended headers. EventSel=00H UMask=10H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G1.HOM Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of flits transmitted over QPI on the home channel. EventSel=00H UMask=06H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G1.HOM_NONREQ Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of non-request flits transmitted over QPI on the home channel. These are most commonly snoop responses, and this event can be used as a proxy for that. EventSel=00H UMask=04H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G1.HOM_REQ Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of data request transmitted over QPI on the home channel. This basically counts the number of remote memory requests transmitted over QPI. In conjunction with the local read count in the Home Agent, one can calculate the number of LLC Misses. EventSel=00H UMask=02H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G1.SNP Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for SNP, HOM, and DRS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the number of snoop request flits transmitted over QPI. These requests are contained in the snoop channel. This does not include snoop responses, which are transmitted on the home channel. EventSel=00H UMask=01H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G2.NCB Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of Non-Coherent Bypass flits. These packets are generally used to transmit non-coherent data across QPI. EventSel=01H UMask=0CH Counter=0,1,2,3
UNC_Q_TxL_FLITS_G2.NCB_DATA Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of Non-Coherent Bypass data flits. These flits are generally used to transmit non-coherent data across QPI. This does not include a count of the DRS (coherent) data flits. This only counts the data flits, not the NCB headers. EventSel=01H UMask=04H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G2.NCB_NONDATA Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of Non-Coherent Bypass non-data flits. These packets are generally used to transmit non-coherent data across QPI, and the flits counted here are for headers and other non-data flits. This includes extended headers. EventSel=01H UMask=08H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G2.NCS Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Number of NCS (non-coherent standard) flits transmitted over QPI. This includes extended headers. EventSel=01H UMask=10H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G2.NDR_AD Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of flits transmitted over the NDR (Non-Data Response) channel. This channel is used to send a variety of protocol flits including grants and completions. This is only for NDR packets to the local socket which use the AK ring. EventSel=01H UMask=01H Counter=0,1,2,3
UNC_Q_TxL_FLITS_G2.NDR_AK Counts the number of flits transmitted across the QPI Link. This is one of three "groups" that allow us to track flits. It includes filters for NDR, NCB, and NCS message classes. Each "flit" is made up of 80 bits of information (in addition to some ECC data). In full-width (L0) mode, flits are made up of four "fits", each of which contains 20 bits of data (along with some additional ECC data). In half-width (L0p) mode, the fits are only 10 bits, and therefore it takes twice as many fits to transmit a flit. When one talks about QPI "speed" (for example, 8.0 GT/s), the "transfers" here refer to "fits". Therefore, in L0, the system will transfer 1 "flit" at the rate of 1/4th the QPI speed. One can calculate the bandwidth of the link by taking: flits*80b/time. Note that this is not the same as "data" bandwidth. For example, when we are transferring a 64B cacheline across QPI, we will break it into 9 flits -- 1 with header information and 8 with 64 bits of actual "data" and an additional 16 bits of other information. To calculate "data" bandwidth, one should therefore do: data flits * 8B / time.; Counts the total number of flits transmitted over the NDR (Non-Data Response) channel. This channel is used to send a variety of protocol flits including grants and completions. This is only for NDR packets destined for Route-thru to a remote socket. EventSel=01H UMask=02H Counter=0,1,2,3
UNC_Q_TxL_INSERTS Number of allocations into the QPI Tx Flit Buffer. Generally, when data is transmitted across QPI, it will bypass the TxQ and pass directly to the link. However, the TxQ will be used with L0p and when LLR occurs, increasing latency to transfer out to the link. This event can be used in conjunction with the Flit Buffer Occupancy event in order to calculate the average flit buffer lifetime. EventSel=04H UMask=00H Counter=0,1,2,3
UNC_Q_TxL_OCCUPANCY Accumulates the number of flits in the TxQ. Generally, when data is transmitted across QPI, it will bypass the TxQ and pass directly to the link. However, the TxQ will be used with L0p and when LLR occurs, increasing latency to transfer out to the link. This can be used with the cycles not empty event to track average occupancy, or the allocations event to track average lifetime in the TxQ. EventSel=07H UMask=00H Counter=0,1,2,3
UNC_Q_TxL0_POWER_CYCLES Number of QPI qfclk cycles spent in L0 power mode in the Link Layer. L0 is the default mode which provides the highest performance with the most power. Use edge detect to count the number of instances that the link entered L0. Link power states are per link and per direction, so for example the Tx direction could be in one state while Rx was in another. The phy layer sometimes leaves L0 for training, which will not be captured by this event. EventSel=0CH UMask=00H Counter=0,1,2,3
UNC_Q_TxL0P_POWER_CYCLES Number of QPI qfclk cycles spent in L0p power mode. L0p is a mode where we disable 1/2 of the QPI lanes, decreasing our bandwidth in order to save power. It increases snoop and data transfer latencies and decreases overall bandwidth. This mode can be very useful in NUMA optimized workloads that largely only utilize QPI for snoops and their responses. Use edge detect to count the number of instances when the QPI link entered L0p. Link power states are per link and per direction, so for example the Tx direction could be in one state while Rx was in another. EventSel=0DH UMask=00H Counter=0,1,2,3
UNC_Q_TxR_AD_HOM_CREDIT_ACQUIRED.VN0 Number of link layer credits into the R3 (for transactions across the BGF) acquired each cycle. Flow Control FIFO for Home messages on AD. EventSel=26H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_AD_HOM_CREDIT_ACQUIRED.VN1 Number of link layer credits into the R3 (for transactions across the BGF) acquired each cycle. Flow Control FIFO for Home messages on AD. EventSel=26H UMask=02H Counter=0,1,2,3
UNC_Q_TxR_AD_HOM_CREDIT_OCCUPANCY.VN0 Occupancy event that tracks the number of link layer credits into the R3 (for transactions across the BGF) available in each cycle. Flow Control FIFO for HOM messages on AD. EventSel=22H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_AD_HOM_CREDIT_OCCUPANCY.VN1 Occupancy event that tracks the number of link layer credits into the R3 (for transactions across the BGF) available in each cycle. Flow Control FIFO for HOM messages on AD. EventSel=22H UMask=02H Counter=0,1,2,3
UNC_Q_TxR_AD_NDR_CREDIT_ACQUIRED.VN0 Number of link layer credits into the R3 (for transactions across the BGF) acquired each cycle. Flow Control FIFO for NDR messages on AD. EventSel=28H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_AD_NDR_CREDIT_ACQUIRED.VN1 Number of link layer credits into the R3 (for transactions across the BGF) acquired each cycle. Flow Control FIFO for NDR messages on AD. EventSel=28H UMask=02H Counter=0,1,2,3
UNC_Q_TxR_AD_NDR_CREDIT_OCCUPANCY.VN0 Occupancy event that tracks the number of link layer credits into the R3 (for transactions across the BGF) available in each cycle. Flow Control FIFO for NDR messages on AD. EventSel=24H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_AD_NDR_CREDIT_OCCUPANCY.VN1 Occupancy event that tracks the number of link layer credits into the R3 (for transactions across the BGF) available in each cycle. Flow Control FIFO for NDR messages on AD. EventSel=24H UMask=02H Counter=0,1,2,3
UNC_Q_TxR_AD_SNP_CREDIT_ACQUIRED.VN0 Number of link layer credits into the R3 (for transactions across the BGF) acquired each cycle. Flow Control FIFO for Snoop messages on AD. EventSel=27H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_AD_SNP_CREDIT_ACQUIRED.VN1 Number of link layer credits into the R3 (for transactions across the BGF) acquired each cycle. Flow Control FIFO for Snoop messages on AD. EventSel=27H UMask=02H Counter=0,1,2,3
UNC_Q_TxR_AD_SNP_CREDIT_OCCUPANCY.VN0 Occupancy event that tracks the number of link layer credits into the R3 (for transactions across the BGF) available in each cycle. Flow Control FIFO for Snoop messages on AD. EventSel=23H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_AD_SNP_CREDIT_OCCUPANCY.VN1 Occupancy event that tracks the number of link layer credits into the R3 (for transactions across the BGF) available in each cycle. Flow Control FIFO for Snoop messages on AD. EventSel=23H UMask=02H Counter=0,1,2,3
UNC_Q_TxR_AK_NDR_CREDIT_ACQUIRED Number of credits into the R3 (for transactions across the BGF) acquired each cycle. Local NDR message class to AK Egress. EventSel=29H UMask=00H Counter=0,1,2,3
UNC_Q_TxR_AK_NDR_CREDIT_OCCUPANCY Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. Local NDR message class to AK Egress. EventSel=25H UMask=00H Counter=0,1,2,3
UNC_Q_TxR_BL_DRS_CREDIT_ACQUIRED.VN_SHR Number of credits into the R3 (for transactions across the BGF) acquired each cycle. DRS message class to BL Egress. EventSel=2AH UMask=04H Counter=0,1,2,3
UNC_Q_TxR_BL_DRS_CREDIT_ACQUIRED.VN0 Number of credits into the R3 (for transactions across the BGF) acquired each cycle. DRS message class to BL Egress. EventSel=2AH UMask=01H Counter=0,1,2,3
UNC_Q_TxR_BL_DRS_CREDIT_ACQUIRED.VN1 Number of credits into the R3 (for transactions across the BGF) acquired each cycle. DRS message class to BL Egress. EventSel=2AH UMask=02H Counter=0,1,2,3
UNC_Q_TxR_BL_DRS_CREDIT_OCCUPANCY.VN_SHR Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. DRS message class to BL Egress. EventSel=1FH UMask=04H Counter=0,1,2,3
UNC_Q_TxR_BL_DRS_CREDIT_OCCUPANCY.VN0 Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. DRS message class to BL Egress. EventSel=1FH UMask=01H Counter=0,1,2,3
UNC_Q_TxR_BL_DRS_CREDIT_OCCUPANCY.VN1 Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. DRS message class to BL Egress. EventSel=1FH UMask=02H Counter=0,1,2,3
UNC_Q_TxR_BL_NCB_CREDIT_ACQUIRED.VN0 Number of credits into the R3 (for transactions across the BGF) acquired each cycle. NCB message class to BL Egress. EventSel=2BH UMask=01H Counter=0,1,2,3
UNC_Q_TxR_BL_NCB_CREDIT_ACQUIRED.VN1 Number of credits into the R3 (for transactions across the BGF) acquired each cycle. NCB message class to BL Egress. EventSel=2BH UMask=02H Counter=0,1,2,3
UNC_Q_TxR_BL_NCB_CREDIT_OCCUPANCY.VN0 Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. NCB message class to BL Egress. EventSel=20H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_BL_NCB_CREDIT_OCCUPANCY.VN1 Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. NCB message class to BL Egress. EventSel=20H UMask=02H Counter=0,1,2,3
UNC_Q_TxR_BL_NCS_CREDIT_ACQUIRED.VN0 Number of credits into the R3 (for transactions across the BGF) acquired each cycle. NCS message class to BL Egress. EventSel=2CH UMask=01H Counter=0,1,2,3
UNC_Q_TxR_BL_NCS_CREDIT_ACQUIRED.VN1 Number of credits into the R3 (for transactions across the BGF) acquired each cycle. NCS message class to BL Egress. EventSel=2CH UMask=02H Counter=0,1,2,3
UNC_Q_TxR_BL_NCS_CREDIT_OCCUPANCY.VN0 Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. NCS message class to BL Egress. EventSel=21H UMask=01H Counter=0,1,2,3
UNC_Q_TxR_BL_NCS_CREDIT_OCCUPANCY.VN1 Occupancy event that tracks the number of credits into the R3 (for transactions across the BGF) available in each cycle. NCS message class to BL Egress. EventSel=21H UMask=02H Counter=0,1,2,3
UNC_Q_VNA_CREDIT_RETURN_OCCUPANCY Number of VNA credits in the Rx side that are waitng to be returned back across the link. EventSel=1BH UMask=00H Counter=0,1,2,3
UNC_Q_VNA_CREDIT_RETURNS Number of VNA credits returned. EventSel=1CH UMask=00H Counter=0,1,2,3
UNC_R2_CLOCKTICKS Counts the number of uclks in the R2PCIe uclk domain. This could be slightly different than the count in the Ubox because of enable/freeze delays. However, because the R2PCIe is close to the Ubox, they generally should not diverge by more than a handful of cycles. EventSel=01H UMask=00H Counter=0,1,2,3
UNC_R2_IIO_CREDIT.ISOCH_QPI0 UNC_R2_IIO_CREDIT.ISOCH_QPI0 EventSel=2DH UMask=04H Counter=0,1
UNC_R2_IIO_CREDIT.ISOCH_QPI1 UNC_R2_IIO_CREDIT.ISOCH_QPI1 EventSel=2DH UMask=08H Counter=0,1
UNC_R2_IIO_CREDIT.PRQ_QPI0 UNC_R2_IIO_CREDIT.PRQ_QPI0 EventSel=2DH UMask=01H Counter=0,1
UNC_R2_IIO_CREDIT.PRQ_QPI1 UNC_R2_IIO_CREDIT.PRQ_QPI1 EventSel=2DH UMask=02H Counter=0,1
UNC_R2_IIO_CREDITS_ACQUIRED.DRS Counts the number of credits that are acquired in the R2PCIe agent for sending transactions into the IIO on either NCB or NCS are in use. Transactions from the BL ring going into the IIO Agent must first acquire a credit. These credits are for either the NCB or NCS message classes. NCB, or non-coherent bypass messages are used to transmit data without coherency (and are common). NCS is used for reads to PCIe (and should be used sparingly).; Credits to the IIO for the DRS message class. EventSel=33H UMask=08H Counter=0,1
UNC_R2_IIO_CREDITS_ACQUIRED.NCB Counts the number of credits that are acquired in the R2PCIe agent for sending transactions into the IIO on either NCB or NCS are in use. Transactions from the BL ring going into the IIO Agent must first acquire a credit. These credits are for either the NCB or NCS message classes. NCB, or non-coherent bypass messages are used to transmit data without coherency (and are common). NCS is used for reads to PCIe (and should be used sparingly).; Credits to the IIO for the NCB message class. EventSel=33H UMask=10H Counter=0,1
UNC_R2_IIO_CREDITS_ACQUIRED.NCS Counts the number of credits that are acquired in the R2PCIe agent for sending transactions into the IIO on either NCB or NCS are in use. Transactions from the BL ring going into the IIO Agent must first acquire a credit. These credits are for either the NCB or NCS message classes. NCB, or non-coherent bypass messages are used to transmit data without coherency (and are common). NCS is used for reads to PCIe (and should be used sparingly).; Credits to the IIO for the NCS message class. EventSel=33H UMask=20H Counter=0,1
UNC_R2_IIO_CREDITS_USED.DRS Counts the number of cycles when one or more credits in the R2PCIe agent for sending transactions into the IIO on either NCB or NCS are in use. Transactions from the BL ring going into the IIO Agent must first acquire a credit. These credits are for either the NCB or NCS message classes. NCB, or non-coherent bypass messages are used to transmit data without coherency (and are common). NCS is used for reads to PCIe (and should be used sparingly).; Credits to the IIO for the DRS message class. EventSel=32H UMask=08H Counter=0,1
UNC_R2_IIO_CREDITS_USED.NCB Counts the number of cycles when one or more credits in the R2PCIe agent for sending transactions into the IIO on either NCB or NCS are in use. Transactions from the BL ring going into the IIO Agent must first acquire a credit. These credits are for either the NCB or NCS message classes. NCB, or non-coherent bypass messages are used to transmit data without coherency (and are common). NCS is used for reads to PCIe (and should be used sparingly).; Credits to the IIO for the NCB message class. EventSel=32H UMask=10H Counter=0,1
UNC_R2_IIO_CREDITS_USED.NCS Counts the number of cycles when one or more credits in the R2PCIe agent for sending transactions into the IIO on either NCB or NCS are in use. Transactions from the BL ring going into the IIO Agent must first acquire a credit. These credits are for either the NCB or NCS message classes. NCB, or non-coherent bypass messages are used to transmit data without coherency (and are common). NCS is used for reads to PCIe (and should be used sparingly).; Credits to the IIO for the NCS message class. EventSel=32H UMask=20H Counter=0,1
UNC_R2_RING_AD_USED.ALL Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=07H UMask=0FH Counter=0,1,2,3
UNC_R2_RING_AD_USED.CCW Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=07H UMask=0CH Counter=0,1,2,3
UNC_R2_RING_AD_USED.CCW_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=07H UMask=04H Counter=0,1,2,3
UNC_R2_RING_AD_USED.CCW_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=07H UMask=08H Counter=0,1,2,3
UNC_R2_RING_AD_USED.CW Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=07H UMask=03H Counter=0,1,2,3
UNC_R2_RING_AD_USED.CW_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=07H UMask=01H Counter=0,1,2,3
UNC_R2_RING_AD_USED.CW_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=07H UMask=02H Counter=0,1,2,3
UNC_R2_RING_AK_BOUNCES.DN Counts the number of times when a request destined for the AK ingress bounced. EventSel=12H UMask=02H Counter=0,1,2,3
UNC_R2_RING_AK_BOUNCES.UP Counts the number of times when a request destined for the AK ingress bounced. EventSel=12H UMask=01H Counter=0,1,2,3
UNC_R2_RING_AK_USED.ALL Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=08H UMask=0FH Counter=0,1,2,3
UNC_R2_RING_AK_USED.CCW Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=08H UMask=0CH Counter=0,1,2,3
UNC_R2_RING_AK_USED.CCW_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=08H UMask=04H Counter=0,1,2,3
UNC_R2_RING_AK_USED.CCW_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=08H UMask=08H Counter=0,1,2,3
UNC_R2_RING_AK_USED.CW Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=08H UMask=03H Counter=0,1,2,3
UNC_R2_RING_AK_USED.CW_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=08H UMask=01H Counter=0,1,2,3
UNC_R2_RING_AK_USED.CW_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=08H UMask=02H Counter=0,1,2,3
UNC_R2_RING_BL_USED.ALL Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=09H UMask=0FH Counter=0,1,2,3
UNC_R2_RING_BL_USED.CCW Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=09H UMask=0CH Counter=0,1,2,3
UNC_R2_RING_BL_USED.CCW_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=09H UMask=04H Counter=0,1,2,3
UNC_R2_RING_BL_USED.CCW_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=09H UMask=08H Counter=0,1,2,3
UNC_R2_RING_BL_USED.CW Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=09H UMask=03H Counter=0,1,2,3
UNC_R2_RING_BL_USED.CW_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=09H UMask=01H Counter=0,1,2,3
UNC_R2_RING_BL_USED.CW_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=09H UMask=02H Counter=0,1,2,3
UNC_R2_RING_IV_USED.ANY Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. EventSel=0AH UMask=0FH Counter=0,1,2,3
UNC_R2_RING_IV_USED.CCW Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. EventSel=0AH UMask=0CH Counter=0,1,2,3
UNC_R2_RING_IV_USED.CW Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. EventSel=0AH UMask=03H Counter=0,1,2,3
UNC_R2_RxR_CYCLES_NE.NCB Counts the number of cycles when the R2PCIe Ingress is not empty. This tracks one of the three rings that are used by the R2PCIe agent. This can be used in conjunction with the R2PCIe Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCB Ingress Queue EventSel=10H UMask=10H Counter=0,1
UNC_R2_RxR_CYCLES_NE.NCS Counts the number of cycles when the R2PCIe Ingress is not empty. This tracks one of the three rings that are used by the R2PCIe agent. This can be used in conjunction with the R2PCIe Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCS Ingress Queue EventSel=10H UMask=20H Counter=0,1
UNC_R2_RxR_INSERTS.NCB Counts the number of allocations into the R2PCIe Ingress. This tracks one of the three rings that are used by the R2PCIe agent. This can be used in conjunction with the R2PCIe Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCB Ingress Queue EventSel=11H UMask=10H Counter=0,1
UNC_R2_RxR_INSERTS.NCS Counts the number of allocations into the R2PCIe Ingress. This tracks one of the three rings that are used by the R2PCIe agent. This can be used in conjunction with the R2PCIe Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCS Ingress Queue EventSel=11H UMask=20H Counter=0,1
UNC_R2_RxR_OCCUPANCY.DRS Accumulates the occupancy of a given R2PCIe Ingress queue in each cycles. This tracks one of the three ring Ingress buffers. This can be used with the R2PCIe Ingress Not Empty event to calculate average occupancy or the R2PCIe Ingress Allocations event in order to calculate average queuing latency.; DRS Ingress Queue EventSel=13H UMask=08H Counter=0
UNC_R2_SBO0_CREDIT_OCCUPANCY.AD Number of Sbo 0 credits in use in a given cycle, per ring. EventSel=2AH UMask=01H Counter=0
UNC_R2_SBO0_CREDIT_OCCUPANCY.BL Number of Sbo 0 credits in use in a given cycle, per ring. EventSel=2AH UMask=02H Counter=0
UNC_R2_SBO0_CREDITS_ACQUIRED.AD Number of Sbo 0 credits acquired in a given cycle, per ring. EventSel=28H UMask=01H Counter=0,1
UNC_R2_SBO0_CREDITS_ACQUIRED.BL Number of Sbo 0 credits acquired in a given cycle, per ring. EventSel=28H UMask=02H Counter=0,1
UNC_R2_STALL_NO_SBO_CREDIT.SBO0_AD Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=01H Counter=0,1
UNC_R2_STALL_NO_SBO_CREDIT.SBO0_BL Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=04H Counter=0,1
UNC_R2_STALL_NO_SBO_CREDIT.SBO1_AD Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=02H Counter=0,1
UNC_R2_STALL_NO_SBO_CREDIT.SBO1_BL Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=08H Counter=0,1
UNC_R2_TxR_CYCLES_FULL.AD Counts the number of cycles when the R2PCIe Egress buffer is full.; AD Egress Queue EventSel=25H UMask=01H Counter=0
UNC_R2_TxR_CYCLES_FULL.AK Counts the number of cycles when the R2PCIe Egress buffer is full.; AK Egress Queue EventSel=25H UMask=02H Counter=0
UNC_R2_TxR_CYCLES_FULL.BL Counts the number of cycles when the R2PCIe Egress buffer is full.; BL Egress Queue EventSel=25H UMask=04H Counter=0
UNC_R2_TxR_CYCLES_NE.AD Counts the number of cycles when the R2PCIe Egress is not empty. This tracks one of the three rings that are used by the R2PCIe agent. This can be used in conjunction with the R2PCIe Egress Occupancy Accumulator event in order to calculate average queue occupancy. Only a single Egress queue can be tracked at any given time. It is not possible to filter based on direction or polarity.; AD Egress Queue EventSel=23H UMask=01H Counter=0
UNC_R2_TxR_CYCLES_NE.AK Counts the number of cycles when the R2PCIe Egress is not empty. This tracks one of the three rings that are used by the R2PCIe agent. This can be used in conjunction with the R2PCIe Egress Occupancy Accumulator event in order to calculate average queue occupancy. Only a single Egress queue can be tracked at any given time. It is not possible to filter based on direction or polarity.; AK Egress Queue EventSel=23H UMask=02H Counter=0
UNC_R2_TxR_CYCLES_NE.BL Counts the number of cycles when the R2PCIe Egress is not empty. This tracks one of the three rings that are used by the R2PCIe agent. This can be used in conjunction with the R2PCIe Egress Occupancy Accumulator event in order to calculate average queue occupancy. Only a single Egress queue can be tracked at any given time. It is not possible to filter based on direction or polarity.; BL Egress Queue EventSel=23H UMask=04H Counter=0
UNC_R2_TxR_NACK_CW.DN_AD AD CounterClockwise Egress Queue EventSel=26H UMask=01H Counter=0,1
UNC_R2_TxR_NACK_CW.DN_AK AK CounterClockwise Egress Queue EventSel=26H UMask=04H Counter=0,1
UNC_R2_TxR_NACK_CW.DN_BL BL CounterClockwise Egress Queue EventSel=26H UMask=02H Counter=0,1
UNC_R2_TxR_NACK_CW.UP_AD BL CounterClockwise Egress Queue EventSel=26H UMask=08H Counter=0,1
UNC_R2_TxR_NACK_CW.UP_AK AD Clockwise Egress Queue EventSel=26H UMask=20H Counter=0,1
UNC_R2_TxR_NACK_CW.UP_BL AD CounterClockwise Egress Queue EventSel=26H UMask=10H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO_15_17 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 15&17 EventSel=1FH UMask=80H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO10 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 10 EventSel=1FH UMask=04H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO11 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 11 EventSel=1FH UMask=08H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO12 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 12 EventSel=1FH UMask=10H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO13 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 13 EventSel=1FH UMask=20H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO14_16 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 14&16 EventSel=1FH UMask=40H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO8 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 8 EventSel=1FH UMask=01H Counter=0,1
UNC_R3_C_HI_AD_CREDITS_EMPTY.CBO9 No credits available to send to Cbox on the AD Ring (covers higher CBoxes); Cbox 9 EventSel=1FH UMask=02H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO0 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 0 EventSel=22H UMask=01H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO1 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 1 EventSel=22H UMask=02H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO2 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 2 EventSel=22H UMask=04H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO3 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 3 EventSel=22H UMask=08H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO4 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 4 EventSel=22H UMask=10H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO5 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 5 EventSel=22H UMask=20H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO6 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 6 EventSel=22H UMask=40H Counter=0,1
UNC_R3_C_LO_AD_CREDITS_EMPTY.CBO7 No credits available to send to Cbox on the AD Ring (covers lower CBoxes); Cbox 7 EventSel=22H UMask=80H Counter=0,1
UNC_R3_CLOCKTICKS Counts the number of uclks in the QPI uclk domain. This could be slightly different than the count in the Ubox because of enable/freeze delays. However, because the QPI Agent is close to the Ubox, they generally should not diverge by more than a handful of cycles. EventSel=01H UMask=00H Counter=0,1,2
UNC_R3_HA_R2_BL_CREDITS_EMPTY.HA0 No credits available to send to either HA or R2 on the BL Ring; HA0 EventSel=2DH UMask=01H Counter=0,1
UNC_R3_HA_R2_BL_CREDITS_EMPTY.HA1 No credits available to send to either HA or R2 on the BL Ring; HA1 EventSel=2DH UMask=02H Counter=0,1
UNC_R3_HA_R2_BL_CREDITS_EMPTY.R2_NCB No credits available to send to either HA or R2 on the BL Ring; R2 NCB Messages EventSel=2DH UMask=04H Counter=0,1
UNC_R3_HA_R2_BL_CREDITS_EMPTY.R2_NCS No credits available to send to either HA or R2 on the BL Ring; R2 NCS Messages EventSel=2DH UMask=08H Counter=0,1
UNC_R3_IOT_BACKPRESSURE.HUB IOT Backpressure EventSel=0BH UMask=02H Counter=0,1,2
UNC_R3_IOT_BACKPRESSURE.SAT IOT Backpressure EventSel=0BH UMask=01H Counter=0,1,2
UNC_R3_IOT_CTS_HI.CTS2 Debug Mask/Match Tie-Ins EventSel=0DH UMask=01H Counter=0,1,2
UNC_R3_IOT_CTS_HI.CTS3 Debug Mask/Match Tie-Ins EventSel=0DH UMask=02H Counter=0,1,2
UNC_R3_IOT_CTS_LO.CTS0 Debug Mask/Match Tie-Ins EventSel=0CH UMask=01H Counter=0,1,2
UNC_R3_IOT_CTS_LO.CTS1 Debug Mask/Match Tie-Ins EventSel=0CH UMask=02H Counter=0,1,2
UNC_R3_QPI0_AD_CREDITS_EMPTY.VN0_HOM No credits available to send to QPI0 on the AD Ring; VN0 HOM Messages EventSel=20H UMask=02H Counter=0,1
UNC_R3_QPI0_AD_CREDITS_EMPTY.VN0_NDR No credits available to send to QPI0 on the AD Ring; VN0 NDR Messages EventSel=20H UMask=08H Counter=0,1
UNC_R3_QPI0_AD_CREDITS_EMPTY.VN0_SNP No credits available to send to QPI0 on the AD Ring; VN0 SNP Messages EventSel=20H UMask=04H Counter=0,1
UNC_R3_QPI0_AD_CREDITS_EMPTY.VN1_HOM No credits available to send to QPI0 on the AD Ring; VN1 HOM Messages EventSel=20H UMask=10H Counter=0,1
UNC_R3_QPI0_AD_CREDITS_EMPTY.VN1_NDR No credits available to send to QPI0 on the AD Ring; VN1 NDR Messages EventSel=20H UMask=40H Counter=0,1
UNC_R3_QPI0_AD_CREDITS_EMPTY.VN1_SNP No credits available to send to QPI0 on the AD Ring; VN1 SNP Messages EventSel=20H UMask=20H Counter=0,1
UNC_R3_QPI0_AD_CREDITS_EMPTY.VNA No credits available to send to QPI0 on the AD Ring; VNA EventSel=20H UMask=01H Counter=0,1
UNC_R3_QPI0_BL_CREDITS_EMPTY.VN1_HOM No credits available to send to QPI0 on the BL Ring; VN1 HOM Messages EventSel=21H UMask=10H Counter=0,1
UNC_R3_QPI0_BL_CREDITS_EMPTY.VN1_NDR No credits available to send to QPI0 on the BL Ring; VN1 NDR Messages EventSel=21H UMask=40H Counter=0,1
UNC_R3_QPI0_BL_CREDITS_EMPTY.VN1_SNP No credits available to send to QPI0 on the BL Ring; VN1 SNP Messages EventSel=21H UMask=20H Counter=0,1
UNC_R3_QPI0_BL_CREDITS_EMPTY.VNA No credits available to send to QPI0 on the BL Ring; VNA EventSel=21H UMask=01H Counter=0,1
UNC_R3_QPI1_AD_CREDITS_EMPTY.VN1_HOM No credits available to send to QPI1 on the AD Ring; VN1 HOM Messages EventSel=2EH UMask=10H Counter=0,1
UNC_R3_QPI1_AD_CREDITS_EMPTY.VN1_NDR No credits available to send to QPI1 on the AD Ring; VN1 NDR Messages EventSel=2EH UMask=40H Counter=0,1
UNC_R3_QPI1_AD_CREDITS_EMPTY.VN1_SNP No credits available to send to QPI1 on the AD Ring; VN1 SNP Messages EventSel=2EH UMask=20H Counter=0,1
UNC_R3_QPI1_AD_CREDITS_EMPTY.VNA No credits available to send to QPI1 on the AD Ring; VNA EventSel=2EH UMask=01H Counter=0,1
UNC_R3_QPI1_BL_CREDITS_EMPTY.VN0_HOM No credits available to send to QPI1 on the BL Ring; VN0 HOM Messages EventSel=2FH UMask=02H Counter=0,1
UNC_R3_QPI1_BL_CREDITS_EMPTY.VN0_NDR No credits available to send to QPI1 on the BL Ring; VN0 NDR Messages EventSel=2FH UMask=08H Counter=0,1
UNC_R3_QPI1_BL_CREDITS_EMPTY.VN0_SNP No credits available to send to QPI1 on the BL Ring; VN0 SNP Messages EventSel=2FH UMask=04H Counter=0,1
UNC_R3_QPI1_BL_CREDITS_EMPTY.VN1_HOM No credits available to send to QPI1 on the BL Ring; VN1 HOM Messages EventSel=2FH UMask=10H Counter=0,1
UNC_R3_QPI1_BL_CREDITS_EMPTY.VN1_NDR No credits available to send to QPI1 on the BL Ring; VN1 NDR Messages EventSel=2FH UMask=40H Counter=0,1
UNC_R3_QPI1_BL_CREDITS_EMPTY.VN1_SNP No credits available to send to QPI1 on the BL Ring; VN1 SNP Messages EventSel=2FH UMask=20H Counter=0,1
UNC_R3_QPI1_BL_CREDITS_EMPTY.VNA No credits available to send to QPI1 on the BL Ring; VNA EventSel=2FH UMask=01H Counter=0,1
UNC_R3_RING_AD_USED.ALL Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=07H UMask=0FH Counter=0,1,2
UNC_R3_RING_AD_USED.CCW Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=07H UMask=0CH Counter=0,1,2
UNC_R3_RING_AD_USED.CCW_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=07H UMask=04H Counter=0,1,2
UNC_R3_RING_AD_USED.CCW_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=07H UMask=08H Counter=0,1,2
UNC_R3_RING_AD_USED.CW Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=07H UMask=03H Counter=0,1,2
UNC_R3_RING_AD_USED.CW_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=07H UMask=01H Counter=0,1,2
UNC_R3_RING_AD_USED.CW_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=07H UMask=02H Counter=0,1,2
UNC_R3_RING_AK_USED.ALL Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=08H UMask=0FH Counter=0,1,2
UNC_R3_RING_AK_USED.CCW Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=08H UMask=0CH Counter=0,1,2
UNC_R3_RING_AK_USED.CCW_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=08H UMask=04H Counter=0,1,2
UNC_R3_RING_AK_USED.CCW_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=08H UMask=08H Counter=0,1,2
UNC_R3_RING_AK_USED.CW Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=08H UMask=03H Counter=0,1,2
UNC_R3_RING_AK_USED.CW_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=08H UMask=01H Counter=0,1,2
UNC_R3_RING_AK_USED.CW_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=08H UMask=02H Counter=0,1,2
UNC_R3_RING_BL_USED.ALL Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=09H UMask=0FH Counter=0,1,2
UNC_R3_RING_BL_USED.CCW Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=09H UMask=0CH Counter=0,1,2
UNC_R3_RING_BL_USED.CCW_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Even ring polarity. EventSel=09H UMask=04H Counter=0,1,2
UNC_R3_RING_BL_USED.CCW_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Counterclockwise and Odd ring polarity. EventSel=09H UMask=08H Counter=0,1,2
UNC_R3_RING_BL_USED.CW Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop. EventSel=09H UMask=03H Counter=0,1,2
UNC_R3_RING_BL_USED.CW_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Even ring polarity. EventSel=09H UMask=01H Counter=0,1,2
UNC_R3_RING_BL_USED.CW_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sunk, but does not include when packets are being sent from the ring stop.; Filters for the Clockwise and Odd ring polarity. EventSel=09H UMask=02H Counter=0,1,2
UNC_R3_RING_IV_USED.ANY Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. EventSel=0AH UMask=0FH Counter=0,1,2
UNC_R3_RING_IV_USED.CW Counts the number of cycles that the IV ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. EventSel=0AH UMask=03H Counter=0,1,2
UNC_R3_RING_SINK_STARVED.AK Number of cycles the ringstop is in starvation (per ring) EventSel=0EH UMask=02H Counter=0,1,2
UNC_R3_RxR_CYCLES_NE.HOM Counts the number of cycles when the QPI Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; HOM Ingress Queue EventSel=10H UMask=01H Counter=0,1
UNC_R3_RxR_CYCLES_NE.NDR Counts the number of cycles when the QPI Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; NDR Ingress Queue EventSel=10H UMask=04H Counter=0,1
UNC_R3_RxR_CYCLES_NE.SNP Counts the number of cycles when the QPI Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; SNP Ingress Queue EventSel=10H UMask=02H Counter=0,1
UNC_R3_RxR_CYCLES_NE_VN1.DRS Counts the number of cycles when the QPI VN1 Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; DRS Ingress Queue EventSel=14H UMask=08H Counter=0,1
UNC_R3_RxR_CYCLES_NE_VN1.HOM Counts the number of cycles when the QPI VN1 Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; HOM Ingress Queue EventSel=14H UMask=01H Counter=0,1
UNC_R3_RxR_CYCLES_NE_VN1.NCB Counts the number of cycles when the QPI VN1 Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCB Ingress Queue EventSel=14H UMask=10H Counter=0,1
UNC_R3_RxR_CYCLES_NE_VN1.NCS Counts the number of cycles when the QPI VN1 Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCS Ingress Queue EventSel=14H UMask=20H Counter=0,1
UNC_R3_RxR_CYCLES_NE_VN1.NDR Counts the number of cycles when the QPI VN1 Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; NDR Ingress Queue EventSel=14H UMask=04H Counter=0,1
UNC_R3_RxR_CYCLES_NE_VN1.SNP Counts the number of cycles when the QPI VN1 Ingress is not empty. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue occupancy. Multiple ingress buffers can be tracked at a given time using multiple counters.; SNP Ingress Queue EventSel=14H UMask=02H Counter=0,1
UNC_R3_RxR_INSERTS.DRS Counts the number of allocations into the QPI Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; DRS Ingress Queue EventSel=11H UMask=08H Counter=0,1
UNC_R3_RxR_INSERTS.HOM Counts the number of allocations into the QPI Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; HOM Ingress Queue EventSel=11H UMask=01H Counter=0,1
UNC_R3_RxR_INSERTS.NCB Counts the number of allocations into the QPI Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCB Ingress Queue EventSel=11H UMask=10H Counter=0,1
UNC_R3_RxR_INSERTS.NCS Counts the number of allocations into the QPI Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCS Ingress Queue EventSel=11H UMask=20H Counter=0,1
UNC_R3_RxR_INSERTS.NDR Counts the number of allocations into the QPI Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NDR Ingress Queue EventSel=11H UMask=04H Counter=0,1
UNC_R3_RxR_INSERTS.SNP Counts the number of allocations into the QPI Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; SNP Ingress Queue EventSel=11H UMask=02H Counter=0,1
UNC_R3_RxR_INSERTS_VN1.DRS Counts the number of allocations into the QPI VN1 Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; DRS Ingress Queue EventSel=15H UMask=08H Counter=0,1
UNC_R3_RxR_INSERTS_VN1.HOM Counts the number of allocations into the QPI VN1 Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; HOM Ingress Queue EventSel=15H UMask=01H Counter=0,1
UNC_R3_RxR_INSERTS_VN1.NCB Counts the number of allocations into the QPI VN1 Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCB Ingress Queue EventSel=15H UMask=10H Counter=0,1
UNC_R3_RxR_INSERTS_VN1.NCS Counts the number of allocations into the QPI VN1 Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NCS Ingress Queue EventSel=15H UMask=20H Counter=0,1
UNC_R3_RxR_INSERTS_VN1.NDR Counts the number of allocations into the QPI VN1 Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; NDR Ingress Queue EventSel=15H UMask=04H Counter=0,1
UNC_R3_RxR_INSERTS_VN1.SNP Counts the number of allocations into the QPI VN1 Ingress. This tracks one of the three rings that are used by the QPI agent. This can be used in conjunction with the QPI VN1 Ingress Occupancy Accumulator event in order to calculate average queue latency. Multiple ingress buffers can be tracked at a given time using multiple counters.; SNP Ingress Queue EventSel=15H UMask=02H Counter=0,1
UNC_R3_RxR_OCCUPANCY_VN1.DRS Accumulates the occupancy of a given QPI VN1 Ingress queue in each cycles. This tracks one of the three ring Ingress buffers. This can be used with the QPI VN1 Ingress Not Empty event to calculate average occupancy or the QPI VN1 Ingress Allocations event in order to calculate average queuing latency.; DRS Ingress Queue EventSel=13H UMask=08H Counter=0
UNC_R3_RxR_OCCUPANCY_VN1.HOM Accumulates the occupancy of a given QPI VN1 Ingress queue in each cycles. This tracks one of the three ring Ingress buffers. This can be used with the QPI VN1 Ingress Not Empty event to calculate average occupancy or the QPI VN1 Ingress Allocations event in order to calculate average queuing latency.; HOM Ingress Queue EventSel=13H UMask=01H Counter=0
UNC_R3_RxR_OCCUPANCY_VN1.NCB Accumulates the occupancy of a given QPI VN1 Ingress queue in each cycles. This tracks one of the three ring Ingress buffers. This can be used with the QPI VN1 Ingress Not Empty event to calculate average occupancy or the QPI VN1 Ingress Allocations event in order to calculate average queuing latency.; NCB Ingress Queue EventSel=13H UMask=10H Counter=0
UNC_R3_RxR_OCCUPANCY_VN1.NCS Accumulates the occupancy of a given QPI VN1 Ingress queue in each cycles. This tracks one of the three ring Ingress buffers. This can be used with the QPI VN1 Ingress Not Empty event to calculate average occupancy or the QPI VN1 Ingress Allocations event in order to calculate average queuing latency.; NCS Ingress Queue EventSel=13H UMask=20H Counter=0
UNC_R3_RxR_OCCUPANCY_VN1.NDR Accumulates the occupancy of a given QPI VN1 Ingress queue in each cycles. This tracks one of the three ring Ingress buffers. This can be used with the QPI VN1 Ingress Not Empty event to calculate average occupancy or the QPI VN1 Ingress Allocations event in order to calculate average queuing latency.; NDR Ingress Queue EventSel=13H UMask=04H Counter=0
UNC_R3_RxR_OCCUPANCY_VN1.SNP Accumulates the occupancy of a given QPI VN1 Ingress queue in each cycles. This tracks one of the three ring Ingress buffers. This can be used with the QPI VN1 Ingress Not Empty event to calculate average occupancy or the QPI VN1 Ingress Allocations event in order to calculate average queuing latency.; SNP Ingress Queue EventSel=13H UMask=02H Counter=0
UNC_R3_SBO0_CREDIT_OCCUPANCY.AD Number of Sbo 0 credits in use in a given cycle, per ring. EventSel=2AH UMask=01H Counter=0
UNC_R3_SBO0_CREDIT_OCCUPANCY.BL Number of Sbo 0 credits in use in a given cycle, per ring. EventSel=2AH UMask=02H Counter=0
UNC_R3_SBO0_CREDITS_ACQUIRED.AD Number of Sbo 0 credits acquired in a given cycle, per ring. EventSel=28H UMask=01H Counter=0,1
UNC_R3_SBO0_CREDITS_ACQUIRED.BL Number of Sbo 0 credits acquired in a given cycle, per ring. EventSel=28H UMask=02H Counter=0,1
UNC_R3_SBO1_CREDIT_OCCUPANCY.AD Number of Sbo 1 credits in use in a given cycle, per ring. EventSel=2BH UMask=01H Counter=0
UNC_R3_SBO1_CREDIT_OCCUPANCY.BL Number of Sbo 1 credits in use in a given cycle, per ring. EventSel=2BH UMask=02H Counter=0
UNC_R3_SBO1_CREDITS_ACQUIRED.AD Number of Sbo 1 credits acquired in a given cycle, per ring. EventSel=29H UMask=01H Counter=0,1
UNC_R3_SBO1_CREDITS_ACQUIRED.BL Number of Sbo 1 credits acquired in a given cycle, per ring. EventSel=29H UMask=02H Counter=0,1
UNC_R3_STALL_NO_SBO_CREDIT.SBO0_AD Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=01H Counter=0,1
UNC_R3_STALL_NO_SBO_CREDIT.SBO0_BL Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=04H Counter=0,1
UNC_R3_STALL_NO_SBO_CREDIT.SBO1_AD Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=02H Counter=0,1
UNC_R3_STALL_NO_SBO_CREDIT.SBO1_BL Number of cycles Egress is stalled waiting for an Sbo credit to become available. Per Sbo, per Ring. EventSel=2CH UMask=08H Counter=0,1
UNC_R3_TxR_NACK.DN_AD AD CounterClockwise Egress Queue EventSel=26H UMask=01H Counter=0,1
UNC_R3_TxR_NACK.DN_AK AK CounterClockwise Egress Queue EventSel=26H UMask=04H Counter=0,1
UNC_R3_TxR_NACK.DN_BL BL CounterClockwise Egress Queue EventSel=26H UMask=02H Counter=0,1
UNC_R3_TxR_NACK.UP_AD BL CounterClockwise Egress Queue EventSel=26H UMask=08H Counter=0,1
UNC_R3_TxR_NACK.UP_AK AD Clockwise Egress Queue EventSel=26H UMask=20H Counter=0,1
UNC_R3_TxR_NACK.UP_BL AD CounterClockwise Egress Queue EventSel=26H UMask=10H Counter=0,1
UNC_R3_VN0_CREDITS_REJECT.DRS Number of times a request failed to acquire a DRS VN0 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN0 credit and is delayed. This should generally be a rare situation.; Filter for Data Response (DRS). DRS is generally used to transmit data with coherency. For example, remote reads and writes, or cache to cache transfers will transmit their data using DRS. EventSel=37H UMask=08H Counter=0,1
UNC_R3_VN0_CREDITS_REJECT.HOM Number of times a request failed to acquire a DRS VN0 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN0 credit and is delayed. This should generally be a rare situation.; Filter for the Home (HOM) message class. HOM is generally used to send requests, request responses, and snoop responses. EventSel=37H UMask=01H Counter=0,1
UNC_R3_VN0_CREDITS_REJECT.NCB Number of times a request failed to acquire a DRS VN0 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN0 credit and is delayed. This should generally be a rare situation.; Filter for Non-Coherent Broadcast (NCB). NCB is generally used to transmit data without coherency. For example, non-coherent read data returns. EventSel=37H UMask=10H Counter=0,1
UNC_R3_VN0_CREDITS_REJECT.NCS Number of times a request failed to acquire a DRS VN0 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN0 credit and is delayed. This should generally be a rare situation.; Filter for Non-Coherent Standard (NCS). NCS is commonly used for ? EventSel=37H UMask=20H Counter=0,1
UNC_R3_VN0_CREDITS_REJECT.NDR Number of times a request failed to acquire a DRS VN0 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN0 credit and is delayed. This should generally be a rare situation.; NDR packets are used to transmit a variety of protocol flits including grants and completions (CMP). EventSel=37H UMask=04H Counter=0,1
UNC_R3_VN0_CREDITS_REJECT.SNP Number of times a request failed to acquire a DRS VN0 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN0 credit and is delayed. This should generally be a rare situation.; Filter for Snoop (SNP) message class. SNP is used for outgoing snoops. Note that snoop responses flow on the HOM message class. EventSel=37H UMask=02H Counter=0,1
UNC_R3_VN0_CREDITS_USED.DRS Number of times a VN0 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This counts the number of times a VN0 credit was used. Note that a single VN0 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN0 will only count a single credit even though it may use multiple buffers.; Filter for Data Response (DRS). DRS is generally used to transmit data with coherency. For example, remote reads and writes, or cache to cache transfers will transmit their data using DRS. EventSel=36H UMask=08H Counter=0,1
UNC_R3_VN0_CREDITS_USED.HOM Number of times a VN0 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This counts the number of times a VN0 credit was used. Note that a single VN0 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN0 will only count a single credit even though it may use multiple buffers.; Filter for the Home (HOM) message class. HOM is generally used to send requests, request responses, and snoop responses. EventSel=36H UMask=01H Counter=0,1
UNC_R3_VN0_CREDITS_USED.NCB Number of times a VN0 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This counts the number of times a VN0 credit was used. Note that a single VN0 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN0 will only count a single credit even though it may use multiple buffers.; Filter for Non-Coherent Broadcast (NCB). NCB is generally used to transmit data without coherency. For example, non-coherent read data returns. EventSel=36H UMask=10H Counter=0,1
UNC_R3_VN0_CREDITS_USED.NCS Number of times a VN0 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This counts the number of times a VN0 credit was used. Note that a single VN0 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN0 will only count a single credit even though it may use multiple buffers.; Filter for Non-Coherent Standard (NCS). NCS is commonly used for ? EventSel=36H UMask=20H Counter=0,1
UNC_R3_VN0_CREDITS_USED.NDR Number of times a VN0 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This counts the number of times a VN0 credit was used. Note that a single VN0 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN0 will only count a single credit even though it may use multiple buffers.; NDR packets are used to transmit a variety of protocol flits including grants and completions (CMP). EventSel=36H UMask=04H Counter=0,1
UNC_R3_VN0_CREDITS_USED.SNP Number of times a VN0 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN0. VNA is a shared pool used to achieve high performance. The VN0 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN0 if they fail. This counts the number of times a VN0 credit was used. Note that a single VN0 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN0 will only count a single credit even though it may use multiple buffers.; Filter for Snoop (SNP) message class. SNP is used for outgoing snoops. Note that snoop responses flow on the HOM message class. EventSel=36H UMask=02H Counter=0,1
UNC_R3_VN1_CREDITS_REJECT.DRS Number of times a request failed to acquire a VN1 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN1 credit and is delayed. This should generally be a rare situation.; Filter for Data Response (DRS). DRS is generally used to transmit data with coherency. For example, remote reads and writes, or cache to cache transfers will transmit their data using DRS. EventSel=39H UMask=08H Counter=0,1
UNC_R3_VN1_CREDITS_REJECT.HOM Number of times a request failed to acquire a VN1 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN1 credit and is delayed. This should generally be a rare situation.; Filter for the Home (HOM) message class. HOM is generally used to send requests, request responses, and snoop responses. EventSel=39H UMask=01H Counter=0,1
UNC_R3_VN1_CREDITS_REJECT.NCB Number of times a request failed to acquire a VN1 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN1 credit and is delayed. This should generally be a rare situation.; Filter for Non-Coherent Broadcast (NCB). NCB is generally used to transmit data without coherency. For example, non-coherent read data returns. EventSel=39H UMask=10H Counter=0,1
UNC_R3_VN1_CREDITS_REJECT.NCS Number of times a request failed to acquire a VN1 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN1 credit and is delayed. This should generally be a rare situation.; Filter for Non-Coherent Standard (NCS). NCS is commonly used for ? EventSel=39H UMask=20H Counter=0,1
UNC_R3_VN1_CREDITS_REJECT.NDR Number of times a request failed to acquire a VN1 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN1 credit and is delayed. This should generally be a rare situation.; NDR packets are used to transmit a variety of protocol flits including grants and completions (CMP). EventSel=39H UMask=04H Counter=0,1
UNC_R3_VN1_CREDITS_REJECT.SNP Number of times a request failed to acquire a VN1 credit. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This therefore counts the number of times when a request failed to acquire either a VNA or VN1 credit and is delayed. This should generally be a rare situation.; Filter for Snoop (SNP) message class. SNP is used for outgoing snoops. Note that snoop responses flow on the HOM message class. EventSel=39H UMask=02H Counter=0,1
UNC_R3_VN1_CREDITS_USED.DRS Number of times a VN1 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This counts the number of times a VN1 credit was used. Note that a single VN1 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN1 will only count a single credit even though it may use multiple buffers.; Filter for Data Response (DRS). DRS is generally used to transmit data with coherency. For example, remote reads and writes, or cache to cache transfers will transmit their data using DRS. EventSel=38H UMask=08H Counter=0,1
UNC_R3_VN1_CREDITS_USED.HOM Number of times a VN1 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This counts the number of times a VN1 credit was used. Note that a single VN1 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN1 will only count a single credit even though it may use multiple buffers.; Filter for the Home (HOM) message class. HOM is generally used to send requests, request responses, and snoop responses. EventSel=38H UMask=01H Counter=0,1
UNC_R3_VN1_CREDITS_USED.NCB Number of times a VN1 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This counts the number of times a VN1 credit was used. Note that a single VN1 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN1 will only count a single credit even though it may use multiple buffers.; Filter for Non-Coherent Broadcast (NCB). NCB is generally used to transmit data without coherency. For example, non-coherent read data returns. EventSel=38H UMask=10H Counter=0,1
UNC_R3_VN1_CREDITS_USED.NCS Number of times a VN1 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This counts the number of times a VN1 credit was used. Note that a single VN1 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN1 will only count a single credit even though it may use multiple buffers.; Filter for Non-Coherent Standard (NCS). NCS is commonly used for ? EventSel=38H UMask=20H Counter=0,1
UNC_R3_VN1_CREDITS_USED.NDR Number of times a VN1 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This counts the number of times a VN1 credit was used. Note that a single VN1 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN1 will only count a single credit even though it may use multiple buffers.; NDR packets are used to transmit a variety of protocol flits including grants and completions (CMP). EventSel=38H UMask=04H Counter=0,1
UNC_R3_VN1_CREDITS_USED.SNP Number of times a VN1 credit was used on the DRS message channel. In order for a request to be transferred across QPI, it must be guaranteed to have a flit buffer on the remote socket to sink into. There are two credit pools, VNA and VN1. VNA is a shared pool used to achieve high performance. The VN1 pool has reserved entries for each message class and is used to prevent deadlock. Requests first attempt to acquire a VNA credit, and then fall back to VN1 if they fail. This counts the number of times a VN1 credit was used. Note that a single VN1 credit holds access to potentially multiple flit buffers. For example, a transfer that uses VNA could use 9 flit buffers and in that case uses 9 credits. A transfer on VN1 will only count a single credit even though it may use multiple buffers.; Filter for Snoop (SNP) message class. SNP is used for outgoing snoops. Note that snoop responses flow on the HOM message class. EventSel=38H UMask=02H Counter=0,1
UNC_R3_VNA_CREDITS_ACQUIRED.AD Number of QPI VNA Credit acquisitions. This event can be used in conjunction with the VNA In-Use Accumulator to calculate the average lifetime of a credit holder. VNA credits are used by all message classes in order to communicate across QPI. If a packet is unable to acquire credits, it will then attempt to use credits from the VN0 pool. Note that a single packet may require multiple flit buffers (i.e. when data is being transferred). Therefore, this event will increment by the number of credits acquired in each cycle. Filtering based on message class is not provided. One can count the number of packets transferred in a given message class using an qfclk event.; Filter for the Home (HOM) message class. HOM is generally used to send requests, request responses, and snoop responses. EventSel=33H UMask=01H Counter=0,1
UNC_R3_VNA_CREDITS_ACQUIRED.BL Number of QPI VNA Credit acquisitions. This event can be used in conjunction with the VNA In-Use Accumulator to calculate the average lifetime of a credit holder. VNA credits are used by all message classes in order to communicate across QPI. If a packet is unable to acquire credits, it will then attempt to use credits from the VN0 pool. Note that a single packet may require multiple flit buffers (i.e. when data is being transferred). Therefore, this event will increment by the number of credits acquired in each cycle. Filtering based on message class is not provided. One can count the number of packets transferred in a given message class using an qfclk event.; Filter for the Home (HOM) message class. HOM is generally used to send requests, request responses, and snoop responses. EventSel=33H UMask=04H Counter=0,1
UNC_R3_VNA_CREDITS_REJECT.DRS Number of attempted VNA credit acquisitions that were rejected because the VNA credit pool was full (or almost full). It is possible to filter this event by message class. Some packets use more than one flit buffer, and therefore must acquire multiple credits. Therefore, one could get a reject even if the VNA credits were not fully used up. The VNA pool is generally used to provide the bulk of the QPI bandwidth (as opposed to the VN0 pool which is used to guarantee forward progress). VNA credits can run out if the flit buffer on the receiving side starts to queue up substantially. This can happen if the rest of the uncore is unable to drain the requests fast enough.; Filter for Data Response (DRS). DRS is generally used to transmit data with coherency. For example, remote reads and writes, or cache to cache transfers will transmit their data using DRS. EventSel=34H UMask=08H Counter=0,1
UNC_R3_VNA_CREDITS_REJECT.HOM Number of attempted VNA credit acquisitions that were rejected because the VNA credit pool was full (or almost full). It is possible to filter this event by message class. Some packets use more than one flit buffer, and therefore must acquire multiple credits. Therefore, one could get a reject even if the VNA credits were not fully used up. The VNA pool is generally used to provide the bulk of the QPI bandwidth (as opposed to the VN0 pool which is used to guarantee forward progress). VNA credits can run out if the flit buffer on the receiving side starts to queue up substantially. This can happen if the rest of the uncore is unable to drain the requests fast enough.; Filter for the Home (HOM) message class. HOM is generally used to send requests, request responses, and snoop responses. EventSel=34H UMask=01H Counter=0,1
UNC_R3_VNA_CREDITS_REJECT.NCB Number of attempted VNA credit acquisitions that were rejected because the VNA credit pool was full (or almost full). It is possible to filter this event by message class. Some packets use more than one flit buffer, and therefore must acquire multiple credits. Therefore, one could get a reject even if the VNA credits were not fully used up. The VNA pool is generally used to provide the bulk of the QPI bandwidth (as opposed to the VN0 pool which is used to guarantee forward progress). VNA credits can run out if the flit buffer on the receiving side starts to queue up substantially. This can happen if the rest of the uncore is unable to drain the requests fast enough.; Filter for Non-Coherent Broadcast (NCB). NCB is generally used to transmit data without coherency. For example, non-coherent read data returns. EventSel=34H UMask=10H Counter=0,1
UNC_R3_VNA_CREDITS_REJECT.NCS Number of attempted VNA credit acquisitions that were rejected because the VNA credit pool was full (or almost full). It is possible to filter this event by message class. Some packets use more than one flit buffer, and therefore must acquire multiple credits. Therefore, one could get a reject even if the VNA credits were not fully used up. The VNA pool is generally used to provide the bulk of the QPI bandwidth (as opposed to the VN0 pool which is used to guarantee forward progress). VNA credits can run out if the flit buffer on the receiving side starts to queue up substantially. This can happen if the rest of the uncore is unable to drain the requests fast enough.; Filter for Non-Coherent Standard (NCS). EventSel=34H UMask=20H Counter=0,1
UNC_R3_VNA_CREDITS_REJECT.NDR Number of attempted VNA credit acquisitions that were rejected because the VNA credit pool was full (or almost full). It is possible to filter this event by message class. Some packets use more than one flit buffer, and therefore must acquire multiple credits. Therefore, one could get a reject even if the VNA credits were not fully used up. The VNA pool is generally used to provide the bulk of the QPI bandwidth (as opposed to the VN0 pool which is used to guarantee forward progress). VNA credits can run out if the flit buffer on the receiving side starts to queue up substantially. This can happen if the rest of the uncore is unable to drain the requests fast enough.; NDR packets are used to transmit a variety of protocol flits including grants and completions (CMP). EventSel=34H UMask=04H Counter=0,1
UNC_R3_VNA_CREDITS_REJECT.SNP Number of attempted VNA credit acquisitions that were rejected because the VNA credit pool was full (or almost full). It is possible to filter this event by message class. Some packets use more than one flit buffer, and therefore must acquire multiple credits. Therefore, one could get a reject even if the VNA credits were not fully used up. The VNA pool is generally used to provide the bulk of the QPI bandwidth (as opposed to the VN0 pool which is used to guarantee forward progress). VNA credits can run out if the flit buffer on the receiving side starts to queue up substantially. This can happen if the rest of the uncore is unable to drain the requests fast enough.; Filter for Snoop (SNP) message class. SNP is used for outgoing snoops. Note that snoop responses flow on the HOM message class. EventSel=34H UMask=02H Counter=0,1
UNC_S_BOUNCE_CONTROL Bounce Control EventSel=0AH UMask=00H Counter=0,1,2,3
UNC_S_CLOCKTICKS Uncore Clocks EventSel=00H UMask=00H Counter=0,1,2,3
UNC_S_FAST_ASSERTED Counts the number of cycles either the local or incoming distress signals are asserted. Incoming distress includes up, dn and across. EventSel=09H UMask=00H Counter=0,1,2,3
UNC_S_RING_AD_USED.ALL Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1BH UMask=0FH Counter=0,1,2,3
UNC_S_RING_AD_USED.DOWN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1BH UMask=0CH Counter=0,1,2,3
UNC_S_RING_AD_USED.DOWN_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Event ring polarity. EventSel=1BH UMask=04H Counter=0,1,2,3
UNC_S_RING_AD_USED.DOWN_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Odd ring polarity. EventSel=1BH UMask=08H Counter=0,1,2,3
UNC_S_RING_AD_USED.UP Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1BH UMask=03H Counter=0,1,2,3
UNC_S_RING_AD_USED.UP_EVEN Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Even ring polarity. EventSel=1BH UMask=01H Counter=0,1,2,3
UNC_S_RING_AD_USED.UP_ODD Counts the number of cycles that the AD ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Odd ring polarity. EventSel=1BH UMask=02H Counter=0,1,2,3
UNC_S_RING_AK_USED.ALL Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1CH UMask=0FH Counter=0,1,2,3
UNC_S_RING_AK_USED.DOWN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1CH UMask=0CH Counter=0,1,2,3
UNC_S_RING_AK_USED.DOWN_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Event ring polarity. EventSel=1CH UMask=04H Counter=0,1,2,3
UNC_S_RING_AK_USED.DOWN_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Odd ring polarity. EventSel=1CH UMask=08H Counter=0,1,2,3
UNC_S_RING_AK_USED.UP Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1CH UMask=03H Counter=0,1,2,3
UNC_S_RING_AK_USED.UP_EVEN Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Even ring polarity. EventSel=1CH UMask=01H Counter=0,1,2,3
UNC_S_RING_AK_USED.UP_ODD Counts the number of cycles that the AK ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Odd ring polarity. EventSel=1CH UMask=02H Counter=0,1,2,3
UNC_S_RING_BL_USED.ALL Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1DH UMask=0FH Counter=0,1,2,3
UNC_S_RING_BL_USED.DOWN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1DH UMask=0CH Counter=0,1,2,3
UNC_S_RING_BL_USED.DOWN_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Event ring polarity. EventSel=1DH UMask=04H Counter=0,1,2,3
UNC_S_RING_BL_USED.DOWN_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Down and Odd ring polarity. EventSel=1DH UMask=08H Counter=0,1,2,3
UNC_S_RING_BL_USED.UP Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in HSX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring. EventSel=1DH UMask=03H Counter=0,1,2,3
UNC_S_RING_BL_USED.UP_EVEN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Even ring polarity. EventSel=1DH UMask=01H Counter=0,1,2,3
UNC_S_RING_BL_USED.UP_ODD Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. We really have two rings in BDX -- a clockwise ring and a counter-clockwise ring. On the left side of the ring, the "UP" direction is on the clockwise ring and "DN" is on the counter-clockwise ring. On the right side of the ring, this is reversed. The first half of the CBos are on the left side of the ring, and the 2nd half are on the right side of the ring. In other words (for example), in a 4c part, Cbo 0 UP AD is NOT the same ring as CBo 2 UP AD because they are on opposite sides of the ring.; Filters for the Up and Odd ring polarity. EventSel=1DH UMask=02H Counter=0,1,2,3
UNC_S_RING_BOUNCES.AD_CACHE Number of LLC responses that bounced on the Ring. EventSel=05H UMask=01H Counter=0,1,2,3
UNC_S_RING_BOUNCES.AK_CORE Number of LLC responses that bounced on the Ring.; Acknowledgements to core EventSel=05H UMask=02H Counter=0,1,2,3
UNC_S_RING_BOUNCES.BL_CORE Number of LLC responses that bounced on the Ring.; Data Responses to core EventSel=05H UMask=04H Counter=0,1,2,3
UNC_S_RING_BOUNCES.IV_CORE Number of LLC responses that bounced on the Ring.; Snoops of processor's cache. EventSel=05H UMask=08H Counter=0,1,2,3
UNC_S_RING_IV_USED.DN Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. There is only 1 IV ring in HSX. Therefore, if one wants to monitor the "Even" ring, they should select both UP_EVEN and DN_EVEN. To monitor the "Odd" ring, they should select both UP_ODD and DN_ODD.; Filters any polarity EventSel=1EH UMask=0CH Counter=0,1,2,3
UNC_S_RING_IV_USED.UP Counts the number of cycles that the BL ring is being used at this ring stop. This includes when packets are passing by and when packets are being sent, but does not include when packets are being sunk into the ring stop. There is only 1 IV ring in HSX. Therefore, if one wants to monitor the "Even" ring, they should select both UP_EVEN and DN_EVEN. To monitor the "Odd" ring, they should select both UP_ODD and DN_ODD.; Filters any polarity EventSel=1EH UMask=03H Counter=0,1,2,3
UNC_S_RING_SINK_STARVED.AD_CACHE UNC_S_RING_SINK_STARVED.AD_CACHE EventSel=06H UMask=01H Counter=0,1,2,3
UNC_S_RING_SINK_STARVED.AK_CORE UNC_S_RING_SINK_STARVED.AK_CORE EventSel=06H UMask=02H Counter=0,1,2,3
UNC_S_RING_SINK_STARVED.BL_CORE UNC_S_RING_SINK_STARVED.BL_CORE EventSel=06H UMask=04H Counter=0,1,2,3
UNC_S_RING_SINK_STARVED.IV_CORE UNC_S_RING_SINK_STARVED.IV_CORE EventSel=06H UMask=08H Counter=0,1,2,3
UNC_S_RxR_BUSY_STARVED.AD_BNC Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress because a message (credited/bounceable) is being sent. EventSel=15H UMask=02H Counter=0,1,2,3
UNC_S_RxR_BUSY_STARVED.AD_CRD Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress because a message (credited/bounceable) is being sent. EventSel=15H UMask=01H Counter=0,1,2,3
UNC_S_RxR_BUSY_STARVED.BL_BNC Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress because a message (credited/bounceable) is being sent. EventSel=15H UMask=08H Counter=0,1,2,3
UNC_S_RxR_BUSY_STARVED.BL_CRD Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress because a message (credited/bounceable) is being sent. EventSel=15H UMask=04H Counter=0,1,2,3
UNC_S_RxR_BYPASS.AD_BNC Bypass the Sbo Ingress. EventSel=12H UMask=02H Counter=0,1,2,3
UNC_S_RxR_BYPASS.AD_CRD Bypass the Sbo Ingress. EventSel=12H UMask=01H Counter=0,1,2,3
UNC_S_RxR_BYPASS.AK Bypass the Sbo Ingress. EventSel=12H UMask=10H Counter=0,1,2,3
UNC_S_RxR_BYPASS.BL_BNC Bypass the Sbo Ingress. EventSel=12H UMask=08H Counter=0,1,2,3
UNC_S_RxR_BYPASS.BL_CRD Bypass the Sbo Ingress. EventSel=12H UMask=04H Counter=0,1,2,3
UNC_S_RxR_BYPASS.IV Bypass the Sbo Ingress. EventSel=12H UMask=20H Counter=0,1,2,3
UNC_S_RxR_CRD_STARVED.AD_BNC Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress due to lack of credit. EventSel=14H UMask=02H Counter=0,1,2,3
UNC_S_RxR_CRD_STARVED.AD_CRD Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress due to lack of credit. EventSel=14H UMask=01H Counter=0,1,2,3
UNC_S_RxR_CRD_STARVED.AK Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress due to lack of credit. EventSel=14H UMask=10H Counter=0,1,2,3
UNC_S_RxR_CRD_STARVED.BL_BNC Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress due to lack of credit. EventSel=14H UMask=08H Counter=0,1,2,3
UNC_S_RxR_CRD_STARVED.BL_CRD Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress due to lack of credit. EventSel=14H UMask=04H Counter=0,1,2,3
UNC_S_RxR_CRD_STARVED.IFV Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress due to lack of credit. EventSel=14H UMask=40H Counter=0,1,2,3
UNC_S_RxR_CRD_STARVED.IV Counts injection starvation. This starvation is triggered when the Ingress cannot send a transaction onto the ring for a long period of time. In this case, the Ingress but unable to forward to Egress due to lack of credit. EventSel=14H UMask=20H Counter=0,1,2,3
UNC_S_RxR_INSERTS.AD_BNC Number of allocations into the Sbo Ingress The Ingress is used to queue up requests received from the ring. EventSel=13H UMask=02H Counter=0,1,2,3
UNC_S_RxR_INSERTS.AD_CRD Number of allocations into the Sbo Ingress The Ingress is used to queue up requests received from the ring. EventSel=13H UMask=01H Counter=0,1,2,3
UNC_S_RxR_INSERTS.AK Number of allocations into the Sbo Ingress The Ingress is used to queue up requests received from the ring. EventSel=13H UMask=10H Counter=0,1,2,3
UNC_S_RxR_INSERTS.BL_BNC Number of allocations into the Sbo Ingress The Ingress is used to queue up requests received from the ring. EventSel=13H UMask=08H Counter=0,1,2,3
UNC_S_RxR_INSERTS.BL_CRD Number of allocations into the Sbo Ingress The Ingress is used to queue up requests received from the ring. EventSel=13H UMask=04H Counter=0,1,2,3
UNC_S_RxR_INSERTS.IV Number of allocations into the Sbo Ingress The Ingress is used to queue up requests received from the ring. EventSel=13H UMask=20H Counter=0,1,2,3
UNC_S_RxR_OCCUPANCY.AD_BNC Occupancy event for the Ingress buffers in the Sbo. The Ingress is used to queue up requests received from the ring. EventSel=11H UMask=02H Counter=0,1,2,3
UNC_S_RxR_OCCUPANCY.AD_CRD Occupancy event for the Ingress buffers in the Sbo. The Ingress is used to queue up requests received from the ring. EventSel=11H UMask=01H Counter=0,1,2,3
UNC_S_RxR_OCCUPANCY.AK Occupancy event for the Ingress buffers in the Sbo. The Ingress is used to queue up requests received from the ring. EventSel=11H UMask=10H Counter=0,1,2,3
UNC_S_RxR_OCCUPANCY.BL_BNC Occupancy event for the Ingress buffers in the Sbo. The Ingress is used to queue up requests received from the ring. EventSel=11H UMask=08H Counter=0,1,2,3
UNC_S_RxR_OCCUPANCY.BL_CRD Occupancy event for the Ingress buffers in the Sbo. The Ingress is used to queue up requests received from the ring. EventSel=11H UMask=04H Counter=0,1,2,3
UNC_S_RxR_OCCUPANCY.IV Occupancy event for the Ingress buffers in the Sbo. The Ingress is used to queue up requests received from the ring. EventSel=11H UMask=20H Counter=0,1,2,3
UNC_S_TxR_ADS_USED.AD UNC_S_TxR_ADS_USED.AD EventSel=04H UMask=01H Counter=0,1,2,3
UNC_S_TxR_ADS_USED.AK UNC_S_TxR_ADS_USED.AK EventSel=04H UMask=02H Counter=0,1,2,3
UNC_S_TxR_ADS_USED.BL UNC_S_TxR_ADS_USED.BL EventSel=04H UMask=04H Counter=0,1,2,3
UNC_S_TxR_INSERTS.AD_BNC Number of allocations into the Sbo Egress. The Egress is used to queue up requests destined for the ring. EventSel=02H UMask=02H Counter=0,1,2,3
UNC_S_TxR_INSERTS.AD_CRD Number of allocations into the Sbo Egress. The Egress is used to queue up requests destined for the ring. EventSel=02H UMask=01H Counter=0,1,2,3
UNC_S_TxR_INSERTS.AK Number of allocations into the Sbo Egress. The Egress is used to queue up requests destined for the ring. EventSel=02H UMask=10H Counter=0,1,2,3
UNC_S_TxR_INSERTS.BL_BNC Number of allocations into the Sbo Egress. The Egress is used to queue up requests destined for the ring. EventSel=02H UMask=08H Counter=0,1,2,3
UNC_S_TxR_INSERTS.BL_CRD Number of allocations into the Sbo Egress. The Egress is used to queue up requests destined for the ring. EventSel=02H UMask=04H Counter=0,1,2,3
UNC_S_TxR_INSERTS.IV Number of allocations into the Sbo Egress. The Egress is used to queue up requests destined for the ring. EventSel=02H UMask=20H Counter=0,1,2,3
UNC_S_TxR_OCCUPANCY.AD_BNC Occupancy event for the Egress buffers in the Sbo. The egress is used to queue up requests destined for the ring. EventSel=01H UMask=02H Counter=0,1,2,3
UNC_S_TxR_OCCUPANCY.AD_CRD Occupancy event for the Egress buffers in the Sbo. The egress is used to queue up requests destined for the ring. EventSel=01H UMask=01H Counter=0,1,2,3
UNC_S_TxR_OCCUPANCY.AK Occupancy event for the Egress buffers in the Sbo. The egress is used to queue up requests destined for the ring. EventSel=01H UMask=10H Counter=0,1,2,3
UNC_S_TxR_OCCUPANCY.BL_BNC Occupancy event for the Egress buffers in the Sbo. The egress is used to queue up requests destined for the ring. EventSel=01H UMask=08H Counter=0,1,2,3
UNC_S_TxR_OCCUPANCY.BL_CRD Occupancy event for the Egress buffers in the Sbo. The egress is used to queue up requests destined for the ring. EventSel=01H UMask=04H Counter=0,1,2,3
UNC_S_TxR_OCCUPANCY.IV Occupancy event for the Egress buffers in the Sbo. The egress is used to queue up requests destined for the ring. EventSel=01H UMask=20H Counter=0,1,2,3
UNC_S_TxR_STARVED.AD Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time. EventSel=03H UMask=01H Counter=0,1,2,3
UNC_S_TxR_STARVED.AK Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time. EventSel=03H UMask=02H Counter=0,1,2,3
UNC_S_TxR_STARVED.BL Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time. EventSel=03H UMask=04H Counter=0,1,2,3
UNC_S_TxR_STARVED.IV Counts injection starvation. This starvation is triggered when the Egress cannot send a transaction onto the ring for a long period of time. EventSel=03H UMask=08H Counter=0,1,2,3
UNC_U_EVENT_MSG.DOORBELL_RCVD Virtual Logical Wire (legacy) message were received from Uncore. Specify the thread to filter on using NCUPMONCTRLGLCTR.ThreadID. EventSel=42H UMask=08H Counter=0,1
UNC_U_FILTER_MATCH.DISABLE Filter match per thread (w/ or w/o Filter Enable). Specify the thread to filter on using NCUPMONCTRLGLCTR.ThreadID. EventSel=41H UMask=02H Counter=0,1
UNC_U_FILTER_MATCH.ENABLE Filter match per thread (w/ or w/o Filter Enable). Specify the thread to filter on using NCUPMONCTRLGLCTR.ThreadID. EventSel=41H UMask=01H Counter=0,1
UNC_U_FILTER_MATCH.U2C_DISABLE Filter match per thread (w/ or w/o Filter Enable). Specify the thread to filter on using NCUPMONCTRLGLCTR.ThreadID. EventSel=41H UMask=08H Counter=0,1
UNC_U_FILTER_MATCH.U2C_ENABLE Filter match per thread (w/ or w/o Filter Enable). Specify the thread to filter on using NCUPMONCTRLGLCTR.ThreadID. EventSel=41H UMask=04H Counter=0,1
UNC_U_PHOLD_CYCLES.ASSERT_TO_ACK PHOLD cycles. Filter from source CoreID. EventSel=45H UMask=01H Counter=0,1
UNC_U_RACU_REQUESTS Number outstanding register requests within message channel tracker EventSel=46H UMask=00H Counter=0,1
UNC_U_U2C_EVENTS.CMC Events coming from Uncore can be sent to one or all cores EventSel=43H UMask=10H Counter=0,1
UNC_U_U2C_EVENTS.LIVELOCK Events coming from Uncore can be sent to one or all cores; Filter by core EventSel=43H UMask=04H Counter=0,1
UNC_U_U2C_EVENTS.LTERROR Events coming from Uncore can be sent to one or all cores; Filter by core EventSel=43H UMask=08H Counter=0,1
UNC_U_U2C_EVENTS.MONITOR_T0 Events coming from Uncore can be sent to one or all cores; Filter by core EventSel=43H UMask=01H Counter=0,1
UNC_U_U2C_EVENTS.MONITOR_T1 Events coming from Uncore can be sent to one or all cores; Filter by core EventSel=43H UMask=02H Counter=0,1
UNC_U_U2C_EVENTS.OTHER Events coming from Uncore can be sent to one or all cores; PREQ, PSMI, P2U, Thermal, PCUSMI, PMI EventSel=43H UMask=80H Counter=0,1
UNC_U_U2C_EVENTS.TRAP Events coming from Uncore can be sent to one or all cores EventSel=43H UMask=40H Counter=0,1
UNC_U_U2C_EVENTS.UMC Events coming from Uncore can be sent to one or all cores EventSel=43H UMask=20H Counter=0,1
UNC_M_DCLOCKTICKS This event is deprecated. Refer to new event UNC_M_CLOCKTICKS_P EventSel=00H UMask=00H Counter=0,1,2,3 Deprecated