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From:   Ian Rogers <irogers@google.com>
Date:   Wed, 25 Oct 2023 14:56:24 -0700
Message-ID: <CAP-5=fURbve928P5CGi-dQ7Y8mZhxRmi9wucFc_gP+aDGMftYw@mail.gmail.com>
Subject: Re: [PATCH v2 1/3] perf vendor events intel: Fix broadwellde
 tma_info_system_dram_bw_use metric
To:     "Liang, Kan" <kan.liang@linux.intel.com>
Cc:     Peter Zijlstra <peterz@infradead.org>,
        Ingo Molnar <mingo@redhat.com>,
        Arnaldo Carvalho de Melo <acme@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Alexander Shishkin <alexander.shishkin@linux.intel.com>,
        Jiri Olsa <jolsa@kernel.org>,
        Namhyung Kim <namhyung@kernel.org>,
        Adrian Hunter <adrian.hunter@intel.com>,
        linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org,
        Perry Taylor <perry.taylor@intel.com>,
        Caleb Biggers <caleb.biggers@intel.com>
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On Thu, Oct 5, 2023 at 3:16=E2=80=AFPM Ian Rogers <irogers@google.com> wrot=
e:
>
> On Wed, Sep 27, 2023 at 6:47=E2=80=AFAM Liang, Kan <kan.liang@linux.intel=
.com> wrote:
> >
> >
> >
> > On 2023-09-26 4:59 p.m., Ian Rogers wrote:
> > > Broadwell-de has a consumer core and server uncore. The uncore_arb PM=
U
> > > isn't present and the broadwellx style cbox PMU should be used
> > > instead. Fix the tma_info_system_dram_bw_use metric to use the server
> > > metric rather than client.
> > >
> > > The associated converter script fix is in:
> > > https://github.com/intel/perfmon/pull/111
> > >
> > > Fixes: 7d124303d620 ("perf vendor events intel: Update broadwell vari=
ant events/metrics")
> > > Signed-off-by: Ian Rogers <irogers@google.com>
> > > ---
> >
> > Thanks Ian. The whole patch series looks good to me.
> >
> > Reviewed-by: Kan Liang <kan.liang@linux.intel.com>
>
> Would be good to pick this up in perf-tools-next.
>
> Thanks,
> Ian

Ping.

Thanks,
Ian

> > Thanks,
> > Kan
> >
> > >  tools/perf/pmu-events/arch/x86/broadwellde/bdwde-metrics.json | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > >
> > > diff --git a/tools/perf/pmu-events/arch/x86/broadwellde/bdwde-metrics=
.json b/tools/perf/pmu-events/arch/x86/broadwellde/bdwde-metrics.json
> > > index 8fc62b8f667d..d0ef46c9bb61 100644
> > > --- a/tools/perf/pmu-events/arch/x86/broadwellde/bdwde-metrics.json
> > > +++ b/tools/perf/pmu-events/arch/x86/broadwellde/bdwde-metrics.json
> > > @@ -652,7 +652,7 @@
> > >      },
> > >      {
> > >          "BriefDescription": "Average external Memory Bandwidth Use f=
or reads and writes [GB / sec]",
> > > -        "MetricExpr": "64 * (arb@event\\=3D0x81\\,umask\\=3D0x1@ + a=
rb@event\\=3D0x84\\,umask\\=3D0x1@) / 1e6 / duration_time / 1e3",
> > > +        "MetricExpr": "64 * (UNC_M_CAS_COUNT.RD + UNC_M_CAS_COUNT.WR=
) / 1e9 / duration_time",
> > >          "MetricGroup": "HPC;Mem;MemoryBW;SoC;tma_issueBW",
> > >          "MetricName": "tma_info_system_dram_bw_use",
> > >          "PublicDescription": "Average external Memory Bandwidth Use =
for reads and writes [GB / sec]. Related metrics: tma_fb_full, tma_mem_band=
width, tma_sq_full"