tools/perf/pmu-events/arch/x86/elkhartlake/ehl-metrics.json

Source file repositories/reference/linux-study-clean/tools/perf/pmu-events/arch/x86/elkhartlake/ehl-metrics.json

File Facts

System
Linux kernel
Corpus path
tools/perf/pmu-events/arch/x86/elkhartlake/ehl-metrics.json
Extension
.json
Size
2122 bytes
Lines
58
Domain
Support Tooling And Documentation
Bucket
tools
Inferred role
Support Tooling And Documentation: configuration, schema, or hardware description
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

[
    {
        "MetricExpr": "INST_RETIRED.ANY / cycles",
        "BriefDescription": "Instructions Per Cycle (per Logical Processor)",
        "MetricName": "IPC"
    },
    {
        "MetricExpr": "1 / IPC",
        "BriefDescription": "Cycles Per Instruction (per Logical Processor)",
        "MetricName": "CPI"
    },
    {
        "MetricExpr": "cycles",
        "BriefDescription": "Per-Logical Processor actual clocks when the Logical Processor is active.",
        "MetricName": "CLKS"
    },
    {
        "MetricExpr": "INST_RETIRED.ANY / BR_MISP_RETIRED.ALL_BRANCHES",
        "BriefDescription": "Number of Instructions per non-speculative Branch Misprediction (JEClear)",
        "MetricName": "IpMispredict"
    },
    {
        "MetricExpr": "INST_RETIRED.ANY / BR_INST_RETIRED.ALL_BRANCHES",
        "BriefDescription": "Instructions per Branch (lower number means higher occurrence rate)",
        "MetricName": "IpBranch"
    },
    {
        "MetricExpr": "INST_RETIRED.ANY",
        "BriefDescription": "Total number of retired Instructions",
        "MetricName": "Instructions"
    },
    {
        "MetricExpr": "64 * LONGEST_LAT_CACHE.MISS / 1000000000 ",
        "BriefDescription": "Average per-core data fill bandwidth to the L3 cache [GB / sec]",
        "MetricName": "L3_Cache_Fill_BW"
    },
    {
        "MetricExpr": "CPU_CLK_UNHALTED.REF_TSC / msr@tsc@",
        "BriefDescription": "Average CPU Utilization",
        "MetricName": "CPU_Utilization"
    },
    {
        "MetricExpr": "(cycles / CPU_CLK_UNHALTED.REF_TSC) * msr@tsc@ / 1000000000 ",
        "BriefDescription": "Measured Average Frequency for unhalted processors [GHz]",
        "MetricName": "Average_Frequency"
    },
    {
        "MetricExpr": "cycles / CPU_CLK_UNHALTED.REF_TSC",
        "BriefDescription": "Average Frequency Utilization relative nominal frequency",
        "MetricName": "Turbo_Utilization"
    },
    {
        "MetricExpr": "cycles:k / cycles",
        "BriefDescription": "Fraction of cycles spent in the Operating System (OS) Kernel mode",
        "MetricName": "Kernel_Utilization"
    }
]

Annotation

Implementation Notes