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perf jevents: Add ILP metrics for Intel

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Use the counter mask (cmask) to see how many cycles an instruction
takes to retire. Present as a set of ILP metrics.

Signed-off-by: Ian Rogers <irogers@google.com>
Tested-by: Thomas Falcon <thomas.falcon@intel.com>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Benjamin Gray <bgray@linux.ibm.com>
Cc: Caleb Biggers <caleb.biggers@intel.com>
Cc: Edward Baker <edward.baker@intel.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: James Clark <james.clark@linaro.org>
Cc: Jing Zhang <renyu.zj@linux.alibaba.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: John Garry <john.g.garry@oracle.com>
Cc: Leo Yan <leo.yan@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Perry Taylor <perry.taylor@intel.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Sandipan Das <sandipan.das@amd.com>
Cc: Weilin Wang <weilin.wang@intel.com>
Cc: Xu Yang <xu.yang_2@nxp.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Ian Rogers 2026-01-27 10:44:54 -08:00 committed by Arnaldo Carvalho de Melo
parent d80edef231
commit 59341f4e17
1 changed files with 40 additions and 0 deletions
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40
tools/perf/pmu-events/intel_metrics.py
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@ -263,6 +263,45 @@ def IntelBr():
description="breakdown of retired branch instructions")
def IntelIlp() -> MetricGroup:
tsc = Event("msr/tsc/")
c0 = Event("msr/mperf/")
low = tsc - c0
inst_ret = Event("INST_RETIRED.ANY_P")
inst_ret_c = [Event(f"{inst_ret.name}/cmask={x}/") for x in range(1, 6)]
core_cycles = Event("CPU_CLK_UNHALTED.THREAD_P_ANY",
"CPU_CLK_UNHALTED.DISTRIBUTED",
"cycles")
ilp = [d_ratio(max(inst_ret_c[x] - inst_ret_c[x + 1], 0), core_cycles)
for x in range(0, 4)]
ilp.append(d_ratio(inst_ret_c[4], core_cycles))
ilp0 = 1
for x in ilp:
ilp0 -= x
return MetricGroup("lpm_ilp", [
Metric("lpm_ilp_idle", "Lower power cycles as a percentage of all cycles",
d_ratio(low, tsc), "100%"),
Metric("lpm_ilp_inst_ret_0",
"Instructions retired in 0 cycles as a percentage of all cycles",
ilp0, "100%"),
Metric("lpm_ilp_inst_ret_1",
"Instructions retired in 1 cycles as a percentage of all cycles",
ilp[0], "100%"),
Metric("lpm_ilp_inst_ret_2",
"Instructions retired in 2 cycles as a percentage of all cycles",
ilp[1], "100%"),
Metric("lpm_ilp_inst_ret_3",
"Instructions retired in 3 cycles as a percentage of all cycles",
ilp[2], "100%"),
Metric("lpm_ilp_inst_ret_4",
"Instructions retired in 4 cycles as a percentage of all cycles",
ilp[3], "100%"),
Metric("lpm_ilp_inst_ret_5",
"Instructions retired in 5 or more cycles as a percentage of all cycles",
ilp[4], "100%"),
])
def IntelL2() -> Optional[MetricGroup]:
try:
DC_HIT = Event("L2_RQSTS.DEMAND_DATA_RD_HIT")
@ -639,6 +678,7 @@ def main() -> None:
Smi(),
Tsx(),
IntelBr(),
IntelIlp(),
IntelL2(),
IntelLdSt(),
IntelPorts(),