From: Andrew Morton <akpm@osdl.org>
To: kladit@t-online.de (Klaus Dittrich)
Cc: linux-kernel@vger.kernel.org, kladit@t-online.de
Subject: Re: dentry cache leak? Re: rsync out of memory 2.6.8-rc2
Date: Mon, 26 Jul 2004 12:37:02 -0700 [thread overview]
Message-ID: <20040726123702.222ae654.akpm@osdl.org> (raw)
In-Reply-To: <20040726150615.GA1119@xeon2.local.here>
kladit@t-online.de (Klaus Dittrich) wrote:
>
> >Can you narrow the onset of the problem down to any particular kernel
> >snapshot?
>
> Did it and here is the answer.
>
> kernel-2.6.7 and bk's up to 2.6.7-bk7 survived a du -s,
> kernels starting with 2.6.7-bk8 did not.
Dammit, -bk7 to -bk8 is a 1.8M diff. Relevant changes include the switch
to the rcu callbacks (make them take an rcu_head* rather than a void*) and
the introduction of /proc/sys/vm/vfs_cache_pressure.
So the immediate question is: please check the contents of your
vfs_cache_pressure tunable. It should be 100. A setting of zero would
cause this behaviour.
>
> Compiler gcc-3.4.1
It would be useful to try a different compiler version.
There's _something_ different in your setup. If we can work out what this
factor is, it will lead us to the bug.
next prev parent reply other threads:[~2004-07-26 20:18 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-07-26 15:06 dentry cache leak? Re: rsync out of memory 2.6.8-rc2 Klaus Dittrich
2004-07-26 19:37 ` Andrew Morton [this message]
2004-07-26 20:02 ` Klaus Dittrich
2004-07-26 20:38 ` Andrew Morton
2004-07-26 21:39 ` Klaus Dittrich
2004-07-26 22:14 ` Jan-Frode Myklebust
2004-07-27 20:43 ` Klaus Dittrich
2004-07-27 21:05 ` Klaus Dittrich
2004-07-28 1:21 ` Nick Piggin
2004-07-28 15:06 ` Klaus Dittrich
2004-07-29 3:31 ` Nick Piggin
2004-07-29 21:07 ` Andrew Morton
2004-07-30 16:30 ` Marcelo Tosatti
2004-07-30 19:47 ` Andrew Morton
2004-07-31 2:01 ` Marcelo Tosatti
2004-07-31 17:23 ` Linus Torvalds
2004-07-31 21:39 ` Andrew Morton
2004-08-03 6:55 ` Nick Piggin
-- strict thread matches above, loose matches on Subject: below --
2004-08-01 9:47 Klaus Dittrich
2004-07-19 9:19 Klaus Dittrich
2004-07-19 11:20 ` dentry cache leak? " bert hubert
[not found] ` <20040719113228.GA15295@outpost.ds9a.nl>
2004-07-19 12:56 ` Klaus Dittrich
2004-07-26 1:06 ` Andrew Morton
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