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Open Menu /tools/perf/pmu-events/arch/x86/cascadelakex/uncore-memory.json 
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[
    {
        "BriefDescription": "read requests to memory controller. Derived from unc_m_cas_count.rd",
        "Counter": "0,1,2,3",
        "EventCode": "0x4",
        "EventName": "LLC_MISSES.MEM_READ",
        "PerPkg": "1",
        "ScaleUnit": "64Bytes",
        "UMask": "0x3",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "write requests to memory controller. Derived from unc_m_cas_count.wr",
        "Counter": "0,1,2,3",
        "EventCode": "0x4",
        "EventName": "LLC_MISSES.MEM_WRITE",
        "PerPkg": "1",
        "ScaleUnit": "64Bytes",
        "UMask": "0xC",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Memory controller clock ticks",
        "Counter": "0,1,2,3",
        "EventName": "UNC_M_CLOCKTICKS",
        "PerPkg": "1",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Cycles where DRAM ranks are in power down (CKE) mode+C37",
        "Counter": "0,1,2,3",
        "EventCode": "0x85",
        "EventName": "UNC_M_POWER_CHANNEL_PPD",
        "MetricExpr": "(UNC_M_POWER_CHANNEL_PPD / UNC_M_CLOCKTICKS) * 100.",
        "MetricName": "power_channel_ppd %",
        "PerPkg": "1",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Cycles Memory is in self refresh power mode",
        "Counter": "0,1,2,3",
        "EventCode": "0x43",
        "EventName": "UNC_M_POWER_SELF_REFRESH",
        "MetricExpr": "(UNC_M_POWER_SELF_REFRESH / UNC_M_CLOCKTICKS) * 100.",
        "MetricName": "power_self_refresh %",
        "PerPkg": "1",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Pre-charges due to page misses",
        "Counter": "0,1,2,3",
        "EventCode": "0x2",
        "EventName": "UNC_M_PRE_COUNT.PAGE_MISS",
        "PerPkg": "1",
        "UMask": "0x1",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Pre-charge for reads",
        "Counter": "0,1,2,3",
        "EventCode": "0x2",
        "EventName": "UNC_M_PRE_COUNT.RD",
        "PerPkg": "1",
        "UMask": "0x4",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Pre-charge for writes",
        "Counter": "0,1,2,3",
        "EventCode": "0x2",
        "EventName": "UNC_M_PRE_COUNT.WR",
        "PerPkg": "1",
        "UMask": "0x8",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Intel Optane DC persistent memory bandwidth read (MB/sec). Derived from unc_m_pmm_rpq_inserts",
        "Counter": "0,1,2,3",
        "EventCode": "0xE3",
        "EventName": "UNC_M_PMM_BANDWIDTH.READ",
        "PerPkg": "1",
        "ScaleUnit": "6.103515625E-5MB/sec",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Intel Optane DC persistent memory bandwidth write (MB/sec). Derived from unc_m_pmm_wpq_inserts",
        "Counter": "0,1,2,3",
        "EventCode": "0xE7",
        "EventName": "UNC_M_PMM_BANDWIDTH.WRITE",
        "PerPkg": "1",
        "ScaleUnit": "6.103515625E-5MB/sec",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Intel Optane DC persistent memory bandwidth total (MB/sec). Derived from unc_m_pmm_rpq_inserts",
        "Counter": "0,1,2,3",
        "EventCode": "0xE3",
        "EventName": "UNC_M_PMM_BANDWIDTH.TOTAL",
        "MetricExpr": "UNC_M_PMM_RPQ_INSERTS + UNC_M_PMM_WPQ_INSERTS",
        "MetricName": "UNC_M_PMM_BANDWIDTH.TOTAL",
        "PerPkg": "1",
        "ScaleUnit": "6.103515625E-5MB/sec",
        "Unit": "iMC"
    },
    {
        "BriefDescription": "Intel Optane DC persistent memory read latency (ns). Derived from unc_m_pmm_rpq_occupancy.all",
        "Counter": "0,1,2,3",
        "EventCode": "0xE0",
        "EventName": "UNC_M_PMM_READ_LATENCY",
        "MetricExpr": "UNC_M_PMM_RPQ_OCCUPANCY.ALL / UNC_M_PMM_RPQ_INSERTS / UNC_M_CLOCKTICKS",
        "MetricName": "UNC_M_PMM_READ_LATENCY",
        "PerPkg": "1",
        "ScaleUnit": "6000000000ns",
        "UMask": "0x1",
        "Unit": "iMC"
    }
]