linux-kernel - Re: [PATCH V3] perf scripts python: Add a script to run instances of perf script in parallel

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Message-ID: <ZihFYbdrnarNFWOd@tassilo>
Date: Tue, 23 Apr 2024 16:33:53 -0700
From: Andi Kleen <ak@...ux.intel.com>
To: Adrian Hunter <adrian.hunter@...el.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>,
	Jiri Olsa <jolsa@...nel.org>, Namhyung Kim <namhyung@...nel.org>,
	Ian Rogers <irogers@...gle.com>, linux-kernel@...r.kernel.org,
	linux-perf-users@...r.kernel.org
Subject: Re: [PATCH V3] perf scripts python: Add a script to run instances of
 perf script in parallel

On Tue, Apr 23, 2024 at 04:32:48PM +0300, Adrian Hunter wrote:
> Add a Python script to run a perf script command multiple times in
> parallel, using perf script options --cpu and --time so that each job
> processes a different chunk of the data.
> 
> Extend perf script tests to test also the new script.
> 
> The script supports the use of normal perf script options like
>  --dlfilter and --script, so that the benefit of running parallel jobs
> naturally extends to them also. In addition, a command can be provided
> (refer --pipe-to option) to pipe standard output to a custom command.
> 
> Refer to the script's own help text at the end of the patch for more
> details.
> 
> The script is useful for Intel PT traces, that can be efficiently
> decoded by perf script when split by CPU and/or time ranges. Running
> jobs in parallel can decrease the overall decoding time.
> 
> Signed-off-by: Adrian Hunter <adrian.hunter@...el.com>

Reviewed-by: Andi Kleen <ak@...ux.intel.com>