From: Markus Trippelsdorf <markus@trippelsdorf.de>
To: Dave Chinner <david@fromorbit.com>
Cc: xfs@oss.sgi.com
Subject: Re: long hangs when deleting large directories (3.0-rc3)
Date: Tue, 21 Jun 2011 20:24:14 +0200 [thread overview]
Message-ID: <20110621182414.GA1723@x4.trippels.de> (raw)
In-Reply-To: <20110621080219.GA1684@x4.trippels.de>
On 2011.06.21 at 10:02 +0200, Markus Trippelsdorf wrote:
> On 2011.06.21 at 14:25 +1000, Dave Chinner wrote:
> > That is, you really need to get a profile of the rm -rf process - or
> > whatever is consuming the CPU time - (e.g. via perf or ftrace)
> > across the hang to so we can narrow down the potential cause of the
> > latency. Speaking of which, latencytop might be helpful in
> > identifying where input is getting held up....
>
> I've recorded a profile with "perf record -g /home/markus/rm_sync"
> ~ % cat rm_sync
> rm -fr /mnt/tmp/tmp/linux && sync
FWIW here are two links to svg time-charts produced by:
perf timechart record /home/markus/rm_sync
http://trippelsdorf.de/timechart1.svg
http://trippelsdorf.de/timechart2.svg
--
Markus
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next prev parent reply other threads:[~2011-06-21 18:24 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-18 14:19 long hangs when deleting large directories (3.0-rc3) Markus Trippelsdorf
2011-06-18 14:24 ` Christoph Hellwig
2011-06-18 14:37 ` Markus Trippelsdorf
2011-06-19 8:16 ` Markus Trippelsdorf
2011-06-19 22:24 ` Dave Chinner
2011-06-20 0:54 ` Markus Trippelsdorf
2011-06-20 1:34 ` Dave Chinner
2011-06-20 2:02 ` Markus Trippelsdorf
2011-06-20 2:36 ` Dave Chinner
2011-06-20 6:03 ` Markus Trippelsdorf
2011-06-20 11:13 ` Markus Trippelsdorf
2011-06-20 11:45 ` Michael Monnerie
2011-06-20 12:31 ` Markus Trippelsdorf
2011-06-20 21:16 ` Markus Trippelsdorf
2011-06-21 4:25 ` Dave Chinner
2011-06-21 8:02 ` Markus Trippelsdorf
2011-06-21 18:24 ` Markus Trippelsdorf [this message]
2011-06-21 18:57 ` Markus Trippelsdorf
2011-06-21 21:22 ` Markus Trippelsdorf
2011-06-22 0:04 ` Dave Chinner
2011-06-22 7:06 ` Markus Trippelsdorf
2011-06-22 7:30 ` Dave Chinner
2011-06-22 7:40 ` Markus Trippelsdorf
2011-06-29 4:31 ` Dave Chinner
2011-06-29 6:19 ` Markus Trippelsdorf
2011-06-29 7:24 ` Dave Chinner
2011-06-29 7:41 ` Markus Trippelsdorf
2011-06-29 12:10 ` Dave Chinner
2011-06-29 12:48 ` Markus Trippelsdorf
2011-06-29 15:08 ` Michael Weissenbacher
2011-06-29 23:53 ` Dave Chinner
2011-06-21 10:18 ` Markus Trippelsdorf
2011-06-21 10:40 ` Markus Trippelsdorf
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