Re: [PATCH v3 6/9] perf test: Reduce overhead and contention in Python shell tests

[sashiko-bot@kernel.org]

> When all Python shell tests run concurrently during 'perf test' under
> heavy load:
> 1. Unfiltered 'perf list' initializes all hardware PMUs and metrics in
>    each test process; use 'perf list tracepoint' when checking for
>    tracepoint events.
> 2. Running 'perf record' without '-B -N --no-bpf-event' synthesizes BPF
>    events across the system and caches build-ids into ~/.debug; add
>    '-B -N --no-bpf-event' to all Python shell test recordings.
> 3. Drop '-a' in test_check_perf_trace_python.sh,
>    test_rw_by_file_python.sh, test_rw_by_pid_python.sh,
>    test_rwtop_python.sh, and test_syscall_counts_by_pid_python.sh where
>    only a single child workload ('dd' or 'sleep') is tested, avoiding
>    system-wide /proc synthesis and ringbuffer contention.
> 4. Add '-W 1' to 'ping -c 1' in test_net_dropmonitor_python.sh and
>    test_netdev_times_python.sh, and narrow 'compaction:*' to
>    'compaction:mm_compaction_begin,compaction:mm_compaction_end' in
>    test_compaction_times_python.sh.
> 
> 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!

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Sashiko AI review · https://sashiko.dev/#/patchset/20260929065839.407062-1-irogers@google.com?part=6