Commit cde9c1a5 authored by Ian Rogers's avatar Ian Rogers Committed by Arnaldo Carvalho de Melo
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perf jevents: Add local/remote "mem" breakdown metrics for Intel 



Breakdown local and remote memory bandwidth, read and writes.

The implementation uses the HA and CHA PMUs present in server models
broadwellde, broadwellx cascadelakex, emeraldrapids, haswellx, icelakex,
ivytown, 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 130f4245

tools/perf/pmu-events/intel_metrics.py

+31 −0
Original line number Diff line number Diff line
@@ -815,6 +815,36 @@ def IntelLdSt() -> Optional[MetricGroup]: 
    ], description="Breakdown of load/store instructions")





def UncoreMem() -> Optional[MetricGroup]:

    try:

        loc_rds = Event("UNC_CHA_REQUESTS.READS_LOCAL",

                        "UNC_H_REQUESTS.READS_LOCAL")

        rem_rds = Event("UNC_CHA_REQUESTS.READS_REMOTE",

                        "UNC_H_REQUESTS.READS_REMOTE")

        loc_wrs = Event("UNC_CHA_REQUESTS.WRITES_LOCAL",

                        "UNC_H_REQUESTS.WRITES_LOCAL")

        rem_wrs = Event("UNC_CHA_REQUESTS.WRITES_REMOTE",

                        "UNC_H_REQUESTS.WRITES_REMOTE")

    except:

        return None



    scale = 64 / 1_000_000

    return MetricGroup("lpm_mem", [

        MetricGroup("lpm_mem_local", [

            Metric("lpm_mem_local_read", "Local memory read bandwidth not including directory updates",

                   d_ratio(loc_rds, interval_sec), f"{scale}MB/s"),

            Metric("lpm_mem_local_write", "Local memory write bandwidth not including directory updates",

                   d_ratio(loc_wrs, interval_sec), f"{scale}MB/s"),

        ]),

        MetricGroup("lpm_mem_remote", [

            Metric("lpm_mem_remote_read", "Remote memory read bandwidth not including directory updates",

                   d_ratio(rem_rds, interval_sec), f"{scale}MB/s"),

            Metric("lpm_mem_remote_write", "Remote memory write bandwidth not including directory updates",

                   d_ratio(rem_wrs, interval_sec), f"{scale}MB/s"),

        ]),

    ], description="Memory Bandwidth breakdown local vs. remote (remote requests in). directory updates not included")





def UncoreMemBw() -> Optional[MetricGroup]:

    mem_events = []

    try:
@@ -914,6 +944,7 @@ def main() -> None: 
        IntelMlp(),

        IntelPorts(),

        IntelSwpf(),

        UncoreMem(),

        UncoreMemBw(),

    ])