linux-kernel - Re: [PATCH v1] perf tests: Run tests in parallel by default

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Date: Wed, 20 Mar 2024 15:20:27 -0300
From: Arnaldo Carvalho de Melo <acme@...nel.org>
To: Ian Rogers <irogers@...gle.com>
Cc: Peter Zijlstra <peterz@...radead.org>, Ingo Molnar <mingo@...hat.com>,
	Namhyung Kim <namhyung@...nel.org>,
	Mark Rutland <mark.rutland@....com>,
	Alexander Shishkin <alexander.shishkin@...ux.intel.com>,
	Jiri Olsa <jolsa@...nel.org>,
	Adrian Hunter <adrian.hunter@...el.com>,
	James Clark <james.clark@....com>,
	Kan Liang <kan.liang@...ux.intel.com>,
	linux-perf-users@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v1] perf tests: Run tests in parallel by default

On Wed, Mar 20, 2024 at 08:58:37AM -0700, Ian Rogers wrote:
> On Fri, Mar 1, 2024 at 9:47 AM Ian Rogers <irogers@...gle.com> wrote:
> >
> > Switch from running tests sequentially to running in parallel by
> > default. Change the opt-in '-p' or '--parallel' flag to '-S' or
> > '--sequential'.
> >
> > On an 8 core tigerlake an address sanitizer run time changes from:
> > 326.54user 622.73system 6:59.91elapsed 226%CPU
> > to:
> > 973.02user 583.98system 3:01.17elapsed 859%CPU
> >
> > So over twice as fast, saving 4 minutes.
> >
> > Signed-off-by: Ian Rogers <irogers@...gle.com>
> 
> Ping.

Thanks, applied.

- Arnaldo