[PATCH v1 10/20] perf jevents: Add ILP metrics for Intel

Ian Rogers
2024-02-29T00:18:47Z

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>
---
tools/perf/pmu-events/intel_metrics.py | 30 ++++++++++++++++++++++++++
1 file changed, 30 insertions(+)

diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py
index 0035e2441d6b..0ca72aeec1ea 100755
--- a/tools/perf/pmu-events/intel_metrics.py
+++ b/tools/perf/pmu-events/intel_metrics.py
@@ -271,6 +271,35 @@ 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)]
+ 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("ilp", [
+ Metric("ilp_idle", "Lower power cycles as a percentage of all cycles",
+ d_ratio(low, tsc), "100%"),
+ Metric("ilp_inst_ret_0", "Instructions retired in 0 cycles as a percentage of all cycles",
+ ilp0, "100%"),
+ Metric("ilp_inst_ret_1", "Instructions retired in 1 cycles as a percentage of all cycles",
+ ilp[0], "100%"),
+ Metric("ilp_inst_ret_2", "Instructions retired in 2 cycles as a percentage of all cycles",
+ ilp[1], "100%"),
+ Metric("ilp_inst_ret_3", "Instructions retired in 3 cycles as a percentage of all cycles",
+ ilp[2], "100%"),
+ Metric("ilp_inst_ret_4", "Instructions retired in 4 cycles as a percentage of all cycles",
+ ilp[3], "100%"),
+ Metric("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")
@@ -603,6 +632,7 @@ all_metrics = MetricGroup("", [
Smi(),
Tsx(),
IntelBr(),
+ IntelIlp(),
IntelL2(),
IntelLdSt(),
IntelPorts(),
--
2.44.0.278.ge034bb2e1d-goog