linux-kernel - Re: [PATCHSET 0/8] perf test: Improve perf record tests (v2)

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Message-ID: <Y1lA57moAxMCiJzG@kernel.org>
Date:   Wed, 26 Oct 2022 11:15:03 -0300
From:   Arnaldo Carvalho de Melo <acme@...nel.org>
To:     Namhyung Kim <namhyung@...nel.org>
Cc:     Jiri Olsa <jolsa@...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
Subject: Re: [PATCHSET 0/8] perf test: Improve perf record tests (v2)

Em Thu, Oct 20, 2022 at 10:26:35AM -0700, Namhyung Kim escreveu:
> Hello,
> 
> This patchset improves the perf record tests to check more cases so that it
> can find problems early.  The motivation was a failure per-thread mmap with
> multi-threaded targets which Adrian is working on the fix.
> 
> Changes in v2)
>  * fix shellcheck issues
>  * drop unsupported --per-thread and --threads combination
>  * do not use initial delay (-D option); instead it runs the target
>    and wait for it separately using the recent waiting.sh library
>  * add Adrian's Reviewed-by tags
> 
> I added a custom test program and more combinations like system-wide and
> command line workload (in per-process mode) testing with multi-threaded
> recording mode.

Thanks, applied to perf/core.

- Arnaldo

 
> Currently it succeeds every tests when running as root!
> 
>   $ sudo ./perf test -v 91
>    91: perf record tests                                               :
>   --- start ---
>   test child forked, pid 108975
>   Build a test program
>   Basic --per-thread mode test
>   Basic --per-thread mode test [Success]
>   Register capture test
>   Register capture test [Success]
>   Basic --system-wide mode test
>   Basic --system-wide mode test [Success]
>   Basic target workload test
>   Basic target workload test [Success]
>   test child finished with 0
>   ---- end ----
>   perf record tests: Ok
> 
> You can find it in 'perf/record-test-v2' branch in
> 
>   git://git.kernel.org/pub/scm/linux/kernel/git/namhyung/linux-perf.git
> 
> Thanks,
> Namhyung
> 
> 
> Namhyung Kim (8):
>   perf test: Do not use instructions:u explicitly
>   perf test: Fix shellcheck issues in the record test
>   perf test: Use a test program in perf record tests
>   perf test: Wait for a new thread when testing --per-thread record
>   perf test: Add system-wide mode in perf record tests
>   perf test: Add target workload test in perf record tests
>   perf test: Test record with --threads option
>   perf test: Do not set TEST_SKIP for record subtests
> 
>  tools/perf/tests/shell/record.sh | 180 +++++++++++++++++++++++++++----
>  1 file changed, 158 insertions(+), 22 deletions(-)
> 
> 
> base-commit: a3a365655a28f12f07eddf4f3fd596987b175e1d
> -- 
> 2.38.0.135.g90850a2211-goog

-- 

- Arnaldo