Re: [PATCH v4 03/22] perf jevents: Add smi metric group for Intel models

[Ian Rogers <irogers@google.com>]

On Wed, Nov 6, 2024 at 9:32 AM Liang, Kan <kan.liang@linux.intel.com> wrote:
>
>
>
> On 2024-09-26 1:50 p.m., Ian Rogers wrote:
> > Allow duplicated metric to be dropped from json files.
> >
> > Signed-off-by: Ian Rogers <irogers@google.com>
> > ---
> >  tools/perf/pmu-events/intel_metrics.py | 21 ++++++++++++++++++++-
> >  1 file changed, 20 insertions(+), 1 deletion(-)
> >
> > diff --git a/tools/perf/pmu-events/intel_metrics.py b/tools/perf/pmu-events/intel_metrics.py
> > index f875eb844c78..f34b4230a4ee 100755
> > --- a/tools/perf/pmu-events/intel_metrics.py
> > +++ b/tools/perf/pmu-events/intel_metrics.py
> > @@ -2,7 +2,7 @@
> >  # SPDX-License-Identifier: (LGPL-2.1 OR BSD-2-Clause)
> >  from metric import (d_ratio, has_event, max, Event, JsonEncodeMetric,
> >                      JsonEncodeMetricGroupDescriptions, LoadEvents, Metric,
> > -                    MetricGroup, Select)
> > +                    MetricGroup, MetricRef, Select)
> >  import argparse
> >  import json
> >  import math
> > @@ -56,6 +56,24 @@ def Rapl() -> MetricGroup:
> >                       description="Running Average Power Limit (RAPL) power consumption estimates")
> >
> >
> > +def Smi() -> MetricGroup:
> > +    aperf = Event('msr/aperf/')
> > +    cycles = Event('cycles')
> > +    smi_num = Event('msr/smi/')
> > +    smi_cycles = Select(Select((aperf - cycles) / aperf, smi_num > 0, 0),
> > +                        has_event(aperf),
> > +                        0)
> > +    return MetricGroup('smi', [
> > +        Metric('smi_num', 'Number of SMI interrupts.',
> > +               Select(smi_num, has_event(smi_num), 0), 'SMI#'),
> > +        # Note, the smi_cycles "Event" is really a reference to the metric.
> > +        Metric('smi_cycles',
> > +               'Percentage of cycles spent in System Management Interrupts. '
> > +               'Requires /sys/devices/cpu/freeze_on_smi to be 1.',
>
> It seems not work for hybrid?

Thanks. The code is a migration of existing metrics that exist for hybrid:
https://git.kernel.org/pub/scm/linux/kernel/git/perf/perf-tools-next.git/tree/tools/perf/pmu-events/arch/x86/alderlake/adl-metrics.json?h=perf-tools-next#n74
I still lack an easy way to test on hybrid, but I think fixing that
case can be follow on work.

Thanks,
Ian