From: David Ahern <dsahern@gmail.com>
To: Wim Heirman <wim@heirman.net>
Cc: linux-kernel@vger.kernel.org
Subject: Re: perf-stat per thread results
Date: Fri, 13 May 2011 09:35:33 -0600 [thread overview]
Message-ID: <4DCD4FC5.8020608@gmail.com> (raw)
In-Reply-To: <BANLkTimTOTz4qNwYPa6Ey7=QRjOhQHWt-Q@mail.gmail.com>
On 05/13/11 09:14, Wim Heirman 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? 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.
perf-stat requires changes to dump counters per thread; it currently
sums all threads into a single value.
> Or, alternatively, can I use perf record --stat and get an exact count
> for each performance counter?
perf-record does not read values from hardware counters.
David
>
> Thanks,
> Wim Heirman
> Ghent University, Belgium
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next prev parent reply other threads:[~2011-05-13 15:35 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-13 15:14 perf-stat per thread results Wim Heirman
2011-05-13 15:30 ` Ingo Molnar
2011-05-13 15:41 ` David Ahern
2011-05-13 15:35 ` David Ahern [this message]
2011-05-13 15:44 ` Ingo Molnar
2011-05-13 20:32 ` Wim Heirman
2011-05-13 20:45 ` Arnaldo Carvalho de Melo
2011-05-14 12:45 ` Wim Heirman
2011-05-14 20:24 ` Wim Heirman
2011-05-13 23:02 ` David Ahern
2011-05-14 12:49 ` Wim Heirman
2011-05-14 17:48 ` David Ahern
2011-05-14 18:52 ` Wim Heirman
2011-05-14 18:57 ` David Ahern
2011-05-13 20:11 ` Juri Lelli
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