From: Andrew Morton <akpm@osdl.org>
To: "Martin J. Bligh" <mbligh@aracnet.com>
Cc: aebr@win.tue.nl, cmm@us.ibm.com, andrea@suse.de,
linux-kernel@vger.kernel.org, ext2-devel@lists.sourceforge.net
Subject: Re: OOM problems on 2.6.12-rc1 with many fsx tests
Date: Wed, 23 Mar 2005 15:42:32 -0800 [thread overview]
Message-ID: <20050323154232.376f977f.akpm@osdl.org> (raw)
In-Reply-To: <25760000.1111620606@flay>
"Martin J. Bligh" <mbligh@aracnet.com> wrote:
>
> >> Nothing beats poking around in a dead machine's guts with kgdb though.
> >
> > Everyone his taste.
> >
> > But I was surprised by
> >
> >> SwapTotal: 1052216 kB
> >> SwapFree: 1045984 kB
> >
> > Strange that processes are killed while lots of swap is available.
>
> I don't think we're that smart about it. If we're really low on mem, it
> seems we invoke the OOM killer whether processes are causing the problem
> or not.
>
> OTOH, if we can't free the kernel mem, we don't have much choice, but
> it's not really helping much ;-)
>
I'm suspecting here that we simply leaked a refcount on every darn
pagecache page in the machine. Note how mapped memory has shrunk down to
less than a megabyte and everything which can be swapped out has been
swapped out.
If so, then oom-killing everything in the world is pretty inevitable.
next prev parent reply other threads:[~2005-03-23 23:43 UTC|newest]
Thread overview: 42+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-03-15 20:44 OOM problems with 2.6.11-rc4 Noah Meyerhans
2005-03-15 21:56 ` Sean
2005-03-15 22:12 ` Lee Revell
2005-03-15 23:46 ` Andrew Morton
2005-03-18 16:12 ` Noah Meyerhans
2005-04-13 13:47 ` Andrea Arcangeli
2005-04-14 16:56 ` Noah Meyerhans
2005-03-16 0:31 ` Andrea Arcangeli
2005-03-16 11:12 ` Andrea Arcangeli
2005-03-16 12:04 ` Andrew Morton
2005-03-16 12:15 ` Andrew Morton
2005-03-16 18:37 ` Andrea Arcangeli
2005-03-16 22:21 ` Andrew Morton
2005-03-23 19:53 ` OOM problems on 2.6.12-rc1 with many fsx tests Mingming Cao
2005-03-23 22:49 ` Andrew Morton
2005-03-23 23:13 ` Martin J. Bligh
2005-03-23 23:20 ` Andrew Morton
2005-03-23 23:26 ` Andries Brouwer
2005-03-23 23:30 ` Martin J. Bligh
2005-03-23 23:42 ` Andrew Morton [this message]
2005-03-23 23:49 ` [Ext2-devel] " Badari Pulavarty
2005-03-24 1:49 ` Andrea Arcangeli
2005-03-24 2:00 ` Andrew Morton
2005-03-25 21:56 ` Andrew Morton
2005-03-25 22:11 ` [Ext2-devel] " Badari Pulavarty
2005-03-27 0:23 ` Mingming Cao
2005-03-27 19:22 ` Mingming Cao
2005-03-27 20:06 ` Badari Pulavarty
2005-03-27 20:17 ` Badari Pulavarty
2005-03-26 0:17 ` Dave Jones
2005-03-26 0:20 ` [Ext2-devel] " Badari Pulavarty
2005-04-04 1:35 ` Andrew Morton
2005-04-04 16:50 ` Mingming Cao
2005-04-04 20:04 ` Andrew Morton
2005-04-04 20:24 ` Martin J. Bligh
2005-04-04 20:33 ` Andrew Morton
2005-04-05 17:04 ` [Ext2-devel] " Mingming Cao
2005-04-06 1:23 ` Andrew Morton
2005-04-12 12:50 ` Stephen C. Tweedie
2005-04-05 16:44 ` Stephen C. Tweedie
2005-03-16 12:23 ` OOM problems with 2.6.11-rc4 Andrew Morton
2005-03-16 12:30 ` Andrew Morton
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