Messages in this thread Patch in this message | | | Date | Wed, 13 Mar 2024 22:58:38 -0700 | Subject | [PATCH v3 11/12] perf jevents: Add ILP metrics for AMD | From | Ian Rogers <> |
| |
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/amd_metrics.py | 30 ++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+)
diff --git a/tools/perf/pmu-events/amd_metrics.py b/tools/perf/pmu-events/amd_metrics.py index 2fc8064e4fc0..bf5c4ffa53e9 100755 --- a/tools/perf/pmu-events/amd_metrics.py +++ b/tools/perf/pmu-events/amd_metrics.py @@ -120,6 +120,35 @@ def AmdBr(): description="breakdown of retired branch instructions") +def AmdIlp() -> MetricGroup: + tsc = Event("msr/tsc/") + c0 = Event("msr/mperf/") + low = tsc - c0 + inst_ret = Event("ex_ret_instr") + 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), cycles) for x in range(0, 4)] + ilp.append(d_ratio(inst_ret_c[4], 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 AmdDtlb() -> Optional[MetricGroup]: global _zen_model if _zen_model >= 4: @@ -584,6 +613,7 @@ def main() -> None: all_metrics = MetricGroup("", [ AmdBr(), + AmdIlp(), AmdDtlb(), AmdItlb(), AmdLdSt(), -- 2.44.0.278.ge034bb2e1d-goog
| |