From: Rik van Riel <riel@redhat.com>
To: Dan Merillat <dan.merillat@gmail.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Linux 2.6.31 - very swap-happy with plenty of free RAM
Date: Wed, 18 Nov 2009 10:22:43 -0500 [thread overview]
Message-ID: <4B041143.2080407@redhat.com> (raw)
In-Reply-To: <c0c067900911172356n2717ce9dn8a4231345903fde6@mail.gmail.com>
On 11/18/2009 02:56 AM, Dan Merillat wrote:
> 1.7gb of disk cache, 750 meg of free RAM, and it swaps out 300meg in a
> matter of seconds when given access to a swapfile, then thrashes the
> disk like crazy because that RAM was actively in use.
>
> Ideas on where to start looking? If this is a vmware issue I'll take
> it to them.
>
This smells like a higher order memory allocation
failed and either is doing a lot of direct reclaim or
kicked kswapd until it freed up lots of memory.
However, I do not believe we keep track of higher
order reclaims in /proc/vmstat or elsewhere I
looked :(
next prev parent reply other threads:[~2009-11-18 15:23 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-05 1:16 complete IO hang since a few kernel revision Norbert Preining
2009-10-05 2:57 ` Ulrich Lukas
2009-10-05 8:33 ` Norbert Preining
2009-10-06 2:00 ` Robert Hancock
2009-10-06 2:05 ` Norbert Preining
2009-10-06 7:11 ` Mike Galbraith
2009-10-06 7:16 ` Norbert Preining
2009-10-06 7:44 ` Mike Galbraith
2009-10-10 19:06 ` Petr Titěra
2009-11-18 7:56 ` Linux 2.6.31 - very swap-happy with plenty of free RAM Dan Merillat
2009-11-18 15:22 ` Rik van Riel [this message]
2009-11-18 15:48 ` Norbert Preining
2009-11-19 14:36 ` KOSAKI Motohiro
2009-11-25 23:13 ` Dan Merillat
2009-11-26 1:54 ` Rik van Riel
2009-12-03 4:16 ` Dan Merillat
2009-12-07 20:49 ` Dan Merillat
2009-12-09 20:48 ` Henrique de Moraes Holschuh
2009-12-09 21:18 ` Rik van Riel
-- strict thread matches above, loose matches on Subject: below --
2009-11-18 21:45 Tomasz Chmielewski
2009-11-19 0:40 ` Dan Merillat
2009-11-19 1:09 ` Sven-Haegar Koch
2009-11-19 1:38 ` Dave Chinner
2009-11-19 6:43 ` Tomasz Chmielewski
2009-11-23 21:57 ` Dan Merillat
2009-11-27 1:56 ` Bill Davidsen
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