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Date: Fri, 14 Oct 2022 08:56:07 +0200
From: Jiri Olsa <olsajiri@...il.com>
To: Namhyung Kim <namhyung@...nel.org>,
Michael Petlan <mpetlan@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
Ingo Molnar <mingo@...nel.org>,
Peter Zijlstra <peterz@...radead.org>,
LKML <linux-kernel@...r.kernel.org>,
Ian Rogers <irogers@...gle.com>,
Adrian Hunter <adrian.hunter@...el.com>,
linux-perf-users@...r.kernel.org,
Kan Liang <kan.liang@...ux.intel.com>,
Leo Yan <leo.yan@...aro.org>, Andi Kleen <ak@...ux.intel.com>,
Athira Rajeev <atrajeev@...ux.vnet.ibm.com>,
James Clark <james.clark@....com>,
Xing Zhengjun <zhengjun.xing@...ux.intel.com>
Subject: Re: [PATCHSET 00/19] perf stat: Cleanup counter aggregation (v2)
On Thu, Oct 13, 2022 at 11:15:31PM -0700, Namhyung Kim wrote:
> Hello,
>
> Current perf stat code is somewhat hard to follow since it handles
> many combinations of PMUs/events for given display and aggregation
> options. This is my attempt to clean it up a little. ;-)
>
> changes in v2)
> * fix a segfault in perf stat report for per-process record (Jiri)
> * fix metric only display (Jiri)
> * add evsel__reset_aggr_stat (ian)
> * add more comments (Ian)
> * add Acked-by from Ian
>
> My first concern is that aggregation and display routines are intermixed
> and processed differently depends on the aggregation mode. I'd like to
> separate them apart and make the logic clearer.
>
> To do that, I added struct perf_stat_aggr to save the aggregated counter
> values and other info. It'll be allocated and processed according to
> the aggr_mode and display logic will use it.
>
> I've tested the following combination.
>
> $ cat test-matrix.sh
> #!/bin/sh
>
> set -e
>
> yes > /dev/null &
> TARGET=$!
>
> ./perf stat true
> ./perf stat -a true
> ./perf stat -C0 true
> ./perf stat -p $TARGET true
> ./perf stat -t $TARGET true
>
> ./perf stat -a -A true
> ./perf stat -a --per-node true
> ./perf stat -a --per-socket true
> ./perf stat -a --per-die true
> ./perf stat -a --per-core true
> ./perf stat -a --per-thread true
>
> ./perf stat -a -I 500 sleep 1
> ./perf stat -a -I 500 --summary sleep 1
> ./perf stat -a -I 500 --per-socket sleep 1
> ./perf stat -a -I 500 --summary --per-socket sleep 1
>
> ./perf stat -a --metric-only true
> ./perf stat -a --metric-only --per-socket true
> ./perf stat -a --metric-only -I 500 sleep 1
> ./perf stat -a --metric-only -I 500 --per-socket sleep 1
>
> ./perf stat record true && ./perf stat report
> ./perf stat record -p $TARGET true && ./perf stat report
> ./perf stat record -a true && ./perf stat report
> ./perf stat record -a --per-core true && ./perf stat report
> ./perf stat record -a --per-core --metric-only true && ./perf stat report
> ./perf stat record -a -I 500 sleep 1 && ./perf stat report
> ./perf stat record -a -I 500 --per-core sleep 1 && ./perf stat report
> ./perf stat record -a -I 500 --per-core --metric-only sleep 1 && ./perf stat report
>
> ./perf stat -a -A -e cpu/event=cpu-cycles,percore/ true
> ./perf stat -a -A -e cpu/event=cpu-cycles,percore/ --percore-show-thread true
>
> kill $TARGET
>
> The code is available at 'perf/stat-aggr-v2' branch in
>
> git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git
Michael,
ay chance you could run your test suite on top of this change?
thanks,
jirka
>
> Thanks,
> Namhyung
>
> Namhyung Kim (19):
> perf tools: Save evsel->pmu in parse_events()
> perf tools: Use pmu info in evsel__is_hybrid()
> perf stat: Use evsel__is_hybrid() more
> perf stat: Add aggr id for global mode
> perf stat: Add cpu aggr id for no aggregation mode
> perf stat: Add 'needs_sort' argument to cpu_aggr_map__new()
> perf stat: Add struct perf_stat_aggr to perf_stat_evsel
> perf stat: Allocate evsel->stats->aggr properly
> perf stat: Aggregate events using evsel->stats->aggr
> perf stat: Aggregate per-thread stats using evsel->stats->aggr
> perf stat: Allocate aggr counts for recorded data
> perf stat: Reset aggr counts for each interval
> perf stat: Split process_counters()
> perf stat: Add perf_stat_merge_counters()
> perf stat: Add perf_stat_process_percore()
> perf stat: Add perf_stat_process_shadow_stats()
> perf stat: Display event stats using aggr counts
> perf stat: Display percore events properly
> perf stat: Remove unused perf_counts.aggr field
>
> tools/perf/builtin-script.c | 4 +-
> tools/perf/builtin-stat.c | 186 +++++--
> tools/perf/tests/parse-metric.c | 2 +-
> tools/perf/tests/pmu-events.c | 2 +-
> tools/perf/util/counts.c | 1 -
> tools/perf/util/counts.h | 1 -
> tools/perf/util/cpumap.c | 16 +-
> tools/perf/util/cpumap.h | 8 +-
> tools/perf/util/evsel.c | 13 +-
> tools/perf/util/parse-events.c | 1 +
> tools/perf/util/pmu.c | 4 +
> .../scripting-engines/trace-event-python.c | 6 -
> tools/perf/util/stat-display.c | 462 +++---------------
> tools/perf/util/stat.c | 385 ++++++++++++---
> tools/perf/util/stat.h | 40 +-
> 15 files changed, 602 insertions(+), 529 deletions(-)
>
>
> base-commit: d79310700590b8b40d8c867012d6c899ea6fd505
> --
> 2.38.0.413.g74048e4d9e-goog
>
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