linux-kernel - Re: [PATCH] perf record: Display data size on pipe mode

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Date: Wed,  7 Feb 2024 13:48:21 -0800
From: Namhyung Kim <namhyung@...nel.org>
To: Namhyung Kim <namhyung@...nel.org>,
	Arnaldo Carvalho de Melo <acme@...nel.org>,
	Jiri Olsa <jolsa@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>,
	linux-perf-users@...r.kernel.org,
	Adrian Hunter <adrian.hunter@...el.com>,
	Ian Rogers <irogers@...gle.com>,
	Ingo Molnar <mingo@...nel.org>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] perf record: Display data size on pipe mode

On Fri, 12 Jan 2024 15:13:40 -0800, Namhyung Kim wrote:
> Currently pipe mode doesn't set the file size and it results in a
> misleading message of 0 data size at the end.  Although it might miss
> some accounting for pipe header or more, just displaying the data size
> would reduce the possible confusion.
> 
> Before:
>   $ perf record -o- perf test -w noploop | perf report -i- -q --percent-limit=1
>   [ perf record: Woken up 1 times to write data ]
>   [ perf record: Captured and wrote 0.000 MB - ]    <======  (here)
>       99.58%  perf     perf                  [.] noploop
> 
> [...]

Applied to perf-tools-next, thanks!

Best regards,
-- 
Namhyung Kim <namhyung@...nel.org>