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Message-ID: <20110513153028.GC3854@elte.hu>
Date: Fri, 13 May 2011 17:30:28 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Wim Heirman <wim@...rman.net>
Cc: linux-kernel@...r.kernel.org,
Peter Zijlstra <a.p.zijlstra@...llo.nl>,
Arnaldo Carvalho de Melo <acme@...hat.com>,
Thomas Gleixner <tglx@...utronix.de>,
Frédéric Weisbecker <fweisbec@...il.com>
Subject: Re: perf-stat per thread results
* Wim Heirman <wim@...rman.net> wrote:
> Hi all,
>
> I'm using perf-stat to look at hardware performance counters for a
> parallel program. Is there a way to get counter values for each thread
> individually, rather than aggregated for the whole process? [...]
Not at the moment, but it would be a useful feature.
> [...] I know I can attach to a specific thread using --tid=, but due to the
> time required to find the tid and attach/detach this isn't accurate for
> short-running programs. Or, alternatively, can I use perf record --stat and
> get an exact count for each performance counter?
Yes perf record --stat should work. 'perf report -T --stdio' is supposed to
print this, but it has regressed i think.
Arnaldo, any ideas?
Thanks,
Ingo
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