[
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.ANY_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0xff",
        "Unit": "cpu_atom"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.ANY_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0xff",
        "Unit": "cpu_lowpower"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.L1_BOUND_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0xf4",
        "Unit": "cpu_atom"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.L1_BOUND_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0xf4",
        "Unit": "cpu_lowpower"
    },
    {
        "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer is stalled due to a DL1 miss.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.L1_MISS",
        "SampleAfterValue": "1000003",
        "UMask": "0x1",
        "Unit": "cpu_atom"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.L1_MISS_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0x81",
        "Unit": "cpu_atom"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.L1_MISS_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0x81",
        "Unit": "cpu_lowpower"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.OTHER_AT_RET",
        "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.",
        "SampleAfterValue": "1000003",
        "UMask": "0xc0",
        "Unit": "cpu_atom"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.OTHER_AT_RET",
        "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.",
        "SampleAfterValue": "1000003",
        "UMask": "0xc0",
        "Unit": "cpu_lowpower"
    },
    {
        "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to a pagewalk.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.PGWALK_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0xa0",
        "Unit": "cpu_atom"
    },
    {
        "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to a pagewalk.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.PGWALK_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0xa0",
        "Unit": "cpu_lowpower"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.ST_ADDR_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0x84",
        "Unit": "cpu_atom"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.ST_ADDR_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0x84",
        "Unit": "cpu_lowpower"
    },
    {
        "BriefDescription": "Counts the number of cycles that the head (oldest load) of the load buffer and retirement are both stalled due to request buffers full or lock in progress.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x05",
        "EventName": "LD_HEAD.WCB_FULL_AT_RET",
        "SampleAfterValue": "1000003",
        "UMask": "0x82",
        "Unit": "cpu_atom"
    },
    {
        "BriefDescription": "Counts the number of memory ordering machine clears triggered due to a snoop from an external agent. Does not count internally generated machine clears such as those due to disambiguations.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0xc3",
        "EventName": "MACHINE_CLEARS.MEMORY_ORDERING",
        "SampleAfterValue": "20003",
        "UMask": "0x2",
        "Unit": "cpu_atom"
    },
    {
        "BriefDescription": "Number of machine clears due to memory ordering conflicts.",
        "Counter": "0,1,2,3,4,5,6,7,8,9",
        "EventCode": "0xc3",
        "EventName": "MACHINE_CLEARS.MEMORY_ORDERING",
        "PublicDescription": "Counts the number of Machine Clears detected dye to memory ordering. Memory Ordering Machine Clears may apply when a memory read may not conform to the memory ordering rules of the x86 architecture",
        "SampleAfterValue": "100003",
        "UMask": "0x2",
        "Unit": "cpu_core"
    },
    {
        "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.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0xc3",
        "EventName": "MACHINE_CLEARS.MEMORY_ORDERING",
        "SampleAfterValue": "20003",
        "UMask": "0x2",
        "Unit": "cpu_lowpower"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 1024 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_1024",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x400",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 1024 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "53",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 128 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_128",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x80",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 128 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "1009",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 16 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_16",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x10",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 16 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "20011",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 2048 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_2048",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x800",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 2048 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "23",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 256 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_256",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x100",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 256 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "503",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 32 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_32",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x20",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 32 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "100007",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 4 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_4",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x4",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 4 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "100003",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 512 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_512",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x200",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 512 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "101",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 64 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_64",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x40",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 64 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "2003",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 8 cycles.",
        "Counter": "2,3,4,5,6,7,8,9",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.LOAD_LATENCY_GT_8",
        "MSRIndex": "0x3F6",
        "MSRValue": "0x8",
        "PublicDescription": "Counts randomly selected loads when the latency from first dispatch to completion is greater than 8 cycles.  Reported latency may be longer than just the memory latency. Available PDIST counters: 0",
        "SampleAfterValue": "50021",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Retired memory store access operations. A PDist event for PEBS Store Latency Facility.",
        "Counter": "0,1",
        "Data_LA": "1",
        "EventCode": "0xcd",
        "EventName": "MEM_TRANS_RETIRED.STORE_SAMPLE",
        "PublicDescription": "Counts Retired memory accesses with at least 1 store operation. This PEBS event is the precisely-distributed (PDist) trigger covering all stores uops for sampling by the PEBS Store Latency Facility. The facility is described in Intel SDM Volume 3 section 19.9.8 Available PDIST counters: 0",
        "SampleAfterValue": "1000003",
        "UMask": "0x2",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts misaligned loads that are 4K page splits.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x13",
        "EventName": "MISALIGN_MEM_REF.LOAD_PAGE_SPLIT",
        "SampleAfterValue": "200003",
        "UMask": "0x2",
        "Unit": "cpu_atom"
    },
    {
        "BriefDescription": "Counts misaligned loads that are 4K page splits.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x13",
        "EventName": "MISALIGN_MEM_REF.LOAD_PAGE_SPLIT",
        "SampleAfterValue": "200003",
        "UMask": "0x2",
        "Unit": "cpu_lowpower"
    },
    {
        "BriefDescription": "Counts misaligned stores that are 4K page splits.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x13",
        "EventName": "MISALIGN_MEM_REF.STORE_PAGE_SPLIT",
        "SampleAfterValue": "200003",
        "UMask": "0x4",
        "Unit": "cpu_atom"
    },
    {
        "BriefDescription": "Counts misaligned stores that are 4K page splits.",
        "Counter": "0,1,2,3,4,5,6,7",
        "EventCode": "0x13",
        "EventName": "MISALIGN_MEM_REF.STORE_PAGE_SPLIT",
        "SampleAfterValue": "200003",
        "UMask": "0x4",
        "Unit": "cpu_lowpower"
    },
    {
        "BriefDescription": "Counts demand data reads that were supplied by DRAM.",
        "Counter": "0,1,2,3",
        "EventCode": "0x2A,0x2B",
        "EventName": "OCR.DEMAND_DATA_RD.DRAM",
        "MSRIndex": "0x1a6,0x1a7",
        "MSRValue": "0x1E780000001",
        "PublicDescription": "Counts demand data reads that were supplied by DRAM. Available PDIST counters: 0",
        "SampleAfterValue": "100003",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts demand data reads that were not supplied by the L3 cache.",
        "Counter": "0,1,2,3",
        "EventCode": "0x2A,0x2B",
        "EventName": "OCR.DEMAND_DATA_RD.L3_MISS",
        "MSRIndex": "0x1a6,0x1a7",
        "MSRValue": "0xFE7F8000001",
        "PublicDescription": "Counts demand data reads that were not supplied by the L3 cache. Available PDIST counters: 0",
        "SampleAfterValue": "100003",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts demand read for ownership (RFO) requests and software prefetches for exclusive ownership (PREFETCHW) that were not supplied by the L3 cache.",
        "Counter": "0,1,2,3",
        "EventCode": "0x2A,0x2B",
        "EventName": "OCR.DEMAND_RFO.L3_MISS",
        "MSRIndex": "0x1a6,0x1a7",
        "MSRValue": "0xFE7F8000002",
        "PublicDescription": "Counts demand read for ownership (RFO) requests and software prefetches for exclusive ownership (PREFETCHW) that were not supplied by the L3 cache. Available PDIST counters: 0",
        "SampleAfterValue": "100003",
        "UMask": "0x1",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Counts demand data read requests that miss the L3 cache.",
        "Counter": "0,1,2,3,4,5,6,7,8,9",
        "EventCode": "0x21",
        "EventName": "OFFCORE_REQUESTS.L3_MISS_DEMAND_DATA_RD",
        "SampleAfterValue": "100003",
        "UMask": "0x10",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "Cycles where data return is pending for a Demand Data Read request who miss L3 cache.",
        "Counter": "0,1,2,3",
        "CounterMask": "1",
        "EventCode": "0x20",
        "EventName": "OFFCORE_REQUESTS_OUTSTANDING.CYCLES_WITH_L3_MISS_DEMAND_DATA_RD",
        "PublicDescription": "Cycles with at least 1 Demand Data Read requests who miss L3 cache in the superQ.",
        "SampleAfterValue": "1000003",
        "UMask": "0x10",
        "Unit": "cpu_core"
    },
    {
        "BriefDescription": "For every cycle, increments by the number of demand data read requests pending that are known to have missed the L3 cache.",
        "Counter": "0,1,2,3",
        "EventCode": "0x20",
        "EventName": "OFFCORE_REQUESTS_OUTSTANDING.L3_MISS_DEMAND_DATA_RD",
        "PublicDescription": "For every cycle, increments by the number of demand data read requests pending that are known to have missed the L3 cache.  Note that this does not capture all elapsed cycles while requests are outstanding - only cycles from when the requests were known by the requesting core to have missed the L3 cache.",
        "SampleAfterValue": "2000003",
        "UMask": "0x10",
        "Unit": "cpu_core"
    }
]
