From: sashiko-bot@kernel.org
To: "Ian Rogers" <irogers@google.com>
Cc: linux-perf-users@vger.kernel.org
Subject: Re: [PATCH v3 5/9] perf test: Deflake failed-syscalls Python shell tests under load
Date: Tue, 29 Sep 2026 07:04:41 +0000 [thread overview]
Message-ID: <20260929070441.BE01D1F00893@smtp.kernel.org> (raw)
In-Reply-To: <20260929065839.407062-6-irogers@google.com>
> When running 'perf test' in parallel under heavy system load, a one-shot
> 'perf record -e ... -- ls /does_not_exist' without '-B -N --no-bpf-event'
> can exit in under 300 microseconds before 'ls's PERF_RECORD_COMM and
> ENOENT sys_exit events are captured, while also contending on ~/.debug
> build-id caching and BPF event synthesis.
>
> Pass '-B -N --no-bpf-event' to 'perf record', sleep 0.05s in a subshell
> after 'ls' so its events are flushed before the parent subshell exits,
> and wrap the record and check steps in a bounded retry loop (up to 5
> attempts).
>
> Fixes: b76c43d09b06 ("perf python: Port failed-syscalls-by-pid to perf module")
> Fixes: 4e3fe6987cba ("perf python: Port failed-syscalls from Perl to perf module")
> Assisted-by: Antigravity:gemini-3.1-pro
> Signed-off-by: Ian Rogers <irogers@google.com>
Sashiko has reviewed this patch and found no issues. It looks great!
--
Sashiko AI review · https://sashiko.dev/#/patchset/20260929065839.407062-1-irogers@google.com?part=5
next prev parent reply other threads:[~2026-09-29 7:04 UTC|newest]
Thread overview: 58+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-29 2:19 [PATCH v1 0/9] perf python: Follow-up fixes and shell test deflaking Ian Rogers
2026-09-29 2:19 ` [PATCH v1 1/9] perf evsel: Clamp sample_id size for ksymbol, bpf, and text_poke events Ian Rogers
2026-09-29 2:38 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 2/9] perf python sctop: Fix offline interval printing and test flakiness Ian Rogers
2026-09-29 2:30 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 3/9] perf python stat-cpi: Fix live mode signal races " Ian Rogers
2026-09-29 2:25 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 4/9] perf test: Deflake Intel PT Python shell tests under load Ian Rogers
2026-09-29 2:24 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 5/9] perf test: Deflake failed-syscalls " Ian Rogers
2026-09-29 2:25 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 6/9] perf test: Reduce overhead and contention in Python shell tests Ian Rogers
2026-09-29 2:26 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 7/9] perf python event_analyzing_sample: Default to in-memory SQLite database Ian Rogers
2026-09-29 2:24 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 8/9] perf python: Initialize debug output on module load Ian Rogers
2026-09-29 2:24 ` sashiko-bot
2026-09-29 2:19 ` [PATCH v1 9/9] perf pmu: Fix race with concurrent tracepoint creation and removal in perf list Ian Rogers
2026-09-29 2:27 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 0/9] perf python: Follow-up fixes and shell test deflaking Ian Rogers
2026-09-29 6:29 ` [PATCH v2 1/9] perf evsel: Clamp sample_id size for ksymbol, bpf, and text_poke events Ian Rogers
2026-09-29 6:41 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 2/9] perf python sctop: Fix offline interval printing and test flakiness Ian Rogers
2026-09-29 6:37 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 3/9] perf python stat-cpi: Fix live mode signal races " Ian Rogers
2026-09-29 6:37 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 4/9] perf test: Deflake Intel PT Python shell tests under load Ian Rogers
2026-09-29 6:35 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 5/9] perf test: Deflake failed-syscalls " Ian Rogers
2026-09-29 6:34 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 6/9] perf test: Reduce overhead and contention in Python shell tests Ian Rogers
2026-09-29 6:35 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 7/9] perf python event_analyzing_sample: Default to in-memory SQLite database Ian Rogers
2026-09-29 6:37 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 8/9] perf python: Initialize debug output on module load Ian Rogers
2026-09-29 6:37 ` sashiko-bot
2026-09-29 6:29 ` [PATCH v2 9/9] perf pmu: Fix race with concurrent tracepoint creation and removal in perf list Ian Rogers
2026-09-29 6:38 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 0/9] perf python: Follow-up fixes and shell test deflaking Ian Rogers
2026-09-29 6:58 ` [PATCH v3 1/9] perf evsel: Clamp sample_id size for ksymbol, bpf, and text_poke events Ian Rogers
2026-09-29 7:08 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 2/9] perf python sctop: Fix offline interval printing and test flakiness Ian Rogers
2026-09-29 7:06 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 3/9] perf python stat-cpi: Fix live mode signal races " Ian Rogers
2026-09-29 7:04 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 4/9] perf test: Deflake Intel PT Python shell tests under load Ian Rogers
2026-09-29 7:03 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 5/9] perf test: Deflake failed-syscalls " Ian Rogers
2026-09-29 7:04 ` sashiko-bot [this message]
2026-09-29 6:58 ` [PATCH v3 6/9] perf test: Reduce overhead and contention in Python shell tests Ian Rogers
2026-09-29 7:04 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 7/9] perf python event_analyzing_sample: Default to in-memory SQLite database Ian Rogers
2026-09-29 7:05 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 8/9] perf python: Initialize debug output on module load Ian Rogers
2026-09-29 7:04 ` sashiko-bot
2026-09-29 6:58 ` [PATCH v3 9/9] perf pmu: Fix race with concurrent tracepoint creation and removal in perf list Ian Rogers
2026-09-29 7:06 ` sashiko-bot
2026-09-29 18:44 ` [PATCH v3 0/9] perf python: Follow-up fixes and shell test deflaking Arnaldo Carvalho de Melo
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