1[ 2 { 3 "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer is stalled due to any number of reasons, including an L1 miss, WCB full, pagewalk, store address block or store data block, on a load that retires.", 4 "Counter": "0,1,2,3,4,5,6,7", 5 "EventCode": "0x05", 6 "EventName": "LD_HEAD.ANY_AT_RET", 7 "SampleAfterValue": "1000003", 8 "UMask": "0xff" 9 }, 10 { 11 "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer is stalled due to a core bound stall including a store address match, a DTLB miss or a page walk that detains the load from retiring.", 12 "Counter": "0,1,2,3,4,5,6,7", 13 "EventCode": "0x05", 14 "EventName": "LD_HEAD.L1_BOUND_AT_RET", 15 "SampleAfterValue": "1000003", 16 "UMask": "0xf4" 17 }, 18 { 19 "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to a DL1 miss.", 20 "Counter": "0,1,2,3,4,5,6,7", 21 "EventCode": "0x05", 22 "EventName": "LD_HEAD.L1_MISS_AT_RET", 23 "SampleAfterValue": "1000003", 24 "UMask": "0x81" 25 }, 26 { 27 "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to other block cases.", 28 "Counter": "0,1,2,3,4,5,6,7", 29 "EventCode": "0x05", 30 "EventName": "LD_HEAD.OTHER_AT_RET", 31 "PublicDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to other block cases such as pipeline conflicts, fences, etc.", 32 "SampleAfterValue": "1000003", 33 "UMask": "0xc0" 34 }, 35 { 36 "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to a pagewalk.", 37 "Counter": "0,1,2,3,4,5,6,7", 38 "EventCode": "0x05", 39 "EventName": "LD_HEAD.PGWALK_AT_RET", 40 "SampleAfterValue": "1000003", 41 "UMask": "0xa0" 42 }, 43 { 44 "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to a store address match.", 45 "Counter": "0,1,2,3,4,5,6,7", 46 "EventCode": "0x05", 47 "EventName": "LD_HEAD.ST_ADDR_AT_RET", 48 "SampleAfterValue": "1000003", 49 "UMask": "0x84" 50 }, 51 { 52 "BriefDescription": "Counts the number of machine clears due to memory ordering caused by a snoop from an external agent. Does not count internally generated machine clears such as those due to memory disambiguation.", 53 "Counter": "0,1,2,3,4,5,6,7", 54 "EventCode": "0xc3", 55 "EventName": "MACHINE_CLEARS.MEMORY_ORDERING", 56 "SampleAfterValue": "20003", 57 "UMask": "0x2" 58 }, 59 { 60 "BriefDescription": "Counts misaligned loads that are 4K page splits.", 61 "Counter": "0,1,2,3,4,5,6,7", 62 "EventCode": "0x13", 63 "EventName": "MISALIGN_MEM_REF.LOAD_PAGE_SPLIT", 64 "SampleAfterValue": "200003", 65 "UMask": "0x2" 66 }, 67 { 68 "BriefDescription": "Counts misaligned stores that are 4K page splits.", 69 "Counter": "0,1,2,3,4,5,6,7", 70 "EventCode": "0x13", 71 "EventName": "MISALIGN_MEM_REF.STORE_PAGE_SPLIT", 72 "SampleAfterValue": "200003", 73 "UMask": "0x4" 74 }, 75 { 76 "BriefDescription": "Counts demand data reads that were not supplied by the L3 cache.", 77 "Counter": "0,1,2,3,4,5,6,7", 78 "EventCode": "0xB7", 79 "EventName": "OCR.DEMAND_DATA_RD.L3_MISS", 80 "MSRIndex": "0x1a6,0x1a7", 81 "MSRValue": "0x3FBFC00001", 82 "SampleAfterValue": "100003", 83 "UMask": "0x1" 84 }, 85 { 86 "BriefDescription": "Counts demand reads for ownership (RFO) and software prefetches for exclusive ownership (PREFETCHW) that were not supplied by the L3 cache.", 87 "Counter": "0,1,2,3,4,5,6,7", 88 "EventCode": "0xB7", 89 "EventName": "OCR.DEMAND_RFO.L3_MISS", 90 "MSRIndex": "0x1a6,0x1a7", 91 "MSRValue": "0x3FBFC00002", 92 "SampleAfterValue": "100003", 93 "UMask": "0x1" 94 } 95] 96