Messages in this thread Patch in this message | | | Date | Wed, 13 Mar 2024 22:59:16 -0700 | Subject | [PATCH v3 17/20] perf jevents: Add dir breakdown metrics for Intel | From | Ian Rogers <> |
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Breakdown directory hit, misses and requests. The implementation uses the M2M and CHA PMUs present in server models broadwellde, broadwellx cascadelakex, emeraldrapids, icelakex, sapphirerapids and skylakex.
Signed-off-by: Ian Rogers <irogers@google.com> --- tools/perf/pmu-events/intel_metrics.py | 36 ++++++++++++++++++++++++++ 1 file changed, 36 insertions(+)
diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py index 254a4e73d926..0e3ead0fa0b1 100755 --- a/tools/perf/pmu-events/intel_metrics.py +++ b/tools/perf/pmu-events/intel_metrics.py @@ -777,6 +777,41 @@ def IntelLdSt() -> Optional[MetricGroup]: ], description = "Breakdown of load/store instructions") +def UncoreDir() -> Optional[MetricGroup]: + try: + m2m_upd = Event("UNC_M2M_DIRECTORY_UPDATE.ANY") + m2m_hits = Event("UNC_M2M_DIRECTORY_HIT.DIRTY_I") + # Turn the umask into a ANY rather than DIRTY_I filter. + m2m_hits.name += "/umask=0xFF,name=UNC_M2M_DIRECTORY_HIT.ANY/" + m2m_miss = Event("UNC_M2M_DIRECTORY_MISS.DIRTY_I") + # Turn the umask into a ANY rather than DIRTY_I filter. + m2m_miss.name += "/umask=0xFF,name=UNC_M2M_DIRECTORY_MISS.ANY/" + cha_upd = Event("UNC_CHA_DIR_UPDATE.HA") + # Turn the umask into a ANY rather than HA filter. + cha_upd.name += "/umask=3,name=UNC_CHA_DIR_UPDATE.ANY/" + except: + return None + + m2m_total = m2m_hits + m2m_miss + upd = m2m_upd + cha_upd # in cache lines + upd_r = upd / interval_sec + look_r = m2m_total / interval_sec + + scale = 64 / 1_000_000 # Cache lines to MB + return MetricGroup("dir", [ + Metric("dir_lookup_rate", "", + d_ratio(m2m_total, interval_sec), "requests/s"), + Metric("dir_lookup_hits", "", + d_ratio(m2m_hits, m2m_total), "100%"), + Metric("dir_lookup_misses", "", + d_ratio(m2m_miss, m2m_total), "100%"), + Metric("dir_update_requests", "", + d_ratio(m2m_upd + cha_upd, interval_sec), "requests/s"), + Metric("dir_update_bw", "", + d_ratio(m2m_upd + cha_upd, interval_sec), f"{scale}MB/s"), + ]) + + def UncoreMem() -> Optional[MetricGroup]: try: loc_rds = Event("UNC_CHA_REQUESTS.READS_LOCAL", "UNC_H_REQUESTS.READS_LOCAL") @@ -900,6 +935,7 @@ def main() -> None: IntelMlp(), IntelPorts(), IntelSwpf(), + UncoreDir(), UncoreMem(), UncoreMemBw(), ]) -- 2.44.0.278.ge034bb2e1d-goog
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