Commit 5dc81578 authored by Ian Rogers's avatar Ian Rogers Committed by Arnaldo Carvalho de Melo
Browse files

perf jevents: Add upi_bw metric for Intel 



Break down UPI read and write bandwidth using uncore_upi counters.

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 6ec3058e

tools/perf/pmu-events/intel_metrics.py

+22 −0
Original line number Diff line number Diff line
@@ -1033,6 +1033,27 @@ def UncoreMemBw() -> Optional[MetricGroup]: 
    ], description="Memory Bandwidth")





def UncoreUpiBw() -> Optional[MetricGroup]:

    try:

        upi_rds = Event("UNC_UPI_RxL_FLITS.ALL_DATA")

        upi_wrs = Event("UNC_UPI_TxL_FLITS.ALL_DATA")

    except:

        return None



    upi_total = upi_rds + upi_wrs



    # From "Uncore Performance Monitoring": When measuring the amount of

    # bandwidth consumed by transmission of the data (i.e. NOT including

    # the header), it should be .ALL_DATA / 9 * 64B.

    scale = (64 / 9) / 1_000_000

    return MetricGroup("lpm_upi_bw", [

        Metric("lpm_upi_bw_read", "UPI read bandwidth",

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

        Metric("lpm_upi_bw_write", "DDR memory write bandwidth",

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

    ], description="UPI Bandwidth")





def main() -> None:

    global _args
@@ -1076,6 +1097,7 @@ def main() -> None: 
        UncoreDir(),

        UncoreMem(),

        UncoreMemBw(),

        UncoreUpiBw(),

    ])



    if _args.metricgroups: