Commit 2166b44b authored by Ian Rogers's avatar Ian Rogers Committed by Arnaldo Carvalho de Melo
Browse files

perf jevents: Add dir breakdown metrics for Intel 



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: default avatarIan Rogers <irogers@google.com>
Tested-by: default avatarThomas 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: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent cde9c1a5

tools/perf/pmu-events/intel_metrics.py

+36 −0
Original line number Diff line number Diff line
@@ -815,6 +815,41 @@ 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("lpm_dir", [

        Metric("lpm_dir_lookup_rate", "",

               d_ratio(m2m_total, interval_sec), "requests/s"),

        Metric("lpm_dir_lookup_hits", "",

               d_ratio(m2m_hits, m2m_total), "100%"),

        Metric("lpm_dir_lookup_misses", "",

               d_ratio(m2m_miss, m2m_total), "100%"),

        Metric("lpm_dir_update_requests", "",

               d_ratio(m2m_upd + cha_upd, interval_sec), "requests/s"),

        Metric("lpm_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",
@@ -944,6 +979,7 @@ def main() -> None: 
        IntelMlp(),

        IntelPorts(),

        IntelSwpf(),

        UncoreDir(),

        UncoreMem(),

        UncoreMemBw(),

    ])