linux-kernel - Re: 2.6.39-rc4+: oom-killer busy killing tasks

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Date:	Mon, 2 May 2011 12:59:50 -0700 (PDT)
From:	Christian Kujau <lists@...dbynature.de>
To:	Dave Chinner <david@...morbit.com>
cc:	Markus Trippelsdorf <markus@...ppelsdorf.de>,
	LKML <linux-kernel@...r.kernel.org>, xfs@....sgi.com,
	minchan.kim@...il.com
Subject: Re: 2.6.39-rc4+: oom-killer busy killing tasks

On Mon, 2 May 2011 at 22:19, Dave Chinner wrote:
> Yes. Try 2 orders of magnitude as a start. i.e change it to 10000...

I've run the -12 test with vfs_cache_pressure=200 and now the -13 test 
with vfs_cache_pressure=10000. The OOM killer still kicks in, but the 
machine seems to be more usable afterwards and does not get totally stuck:

  http://nerdbynature.de/bits/2.6.39-rc4/oom/
  - messages-12.txt.gz & slabinfo-12.txt.bz2
    * oom-debug.sh invoked oom-killer at 01:27:11
    * sysrq-w works until 01:27:08, but got killed by oom

  - messages-13.txt.gz & slabinfo-13.txt.bz2 
    * find invoked oom-killer at 08:44:07
    * sysrq-w works until 08:45:48 (listing jbd2/hda6-8), then
      my debug script got killed

Thanks,
Christian.
-- 
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