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From: Roland Dreier <roland@kernel.org>
To: linux-perf-users@vger.kernel.org
Subject: perf for analyzing userspace contention
Date: Thu, 13 Oct 2011 23:36:23 -0700	[thread overview]
Message-ID: <CAG4TOxPowPUbmZBL41MNJjPYKymTNFW3JMAgEf35u1k2BFgbwA@mail.gmail.com> (raw)

Hi everyone,

Hope this question from a kernel hacker about profiling userspace
isn't too dumb...

Anyway, suppose I have a multithreaded userspace app that uses a bunch of
pthread_mutexes, and I want to figure out which locks are hot and/or heavily
contended.  What's the best way to do that?  Is perf the right, or is there
something better?  (This seems like such an obvious thing to want that there
must be some good way to get this data, I hope)

Thanks!
  Roland

             reply	other threads:[~2011-10-14  6:36 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-10-14  6:36 Roland Dreier [this message]
2011-10-14  6:58 ` perf for analyzing userspace contention Maucci, Cyrille
2011-10-14  7:21   ` Roland Dreier
2011-10-14  7:33     ` Maucci, Cyrille
2011-10-14  9:42 ` Stefan Hajnoczi
2011-10-14 16:58   ` Roland Dreier
2011-10-14 21:25 ` David Ahern
2011-10-14 22:43   ` Arnaldo Carvalho de Melo
2011-10-17 23:43 ` Arun Sharma
2011-10-18  0:12   ` David Ahern

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