[Systems] Issues when running without swap (Fwd: Re: Bug#599345: linux-image-2.6.32-5-amd64: iwlagn allocation failure)

[Sascha Silbe]

Hi!

A side-note on the topic of running without swap (we talked about it
recently)...

Sascha

--- Begin forwarded message from Ben Hutchings ---
From: Ben Hutchings <ben at decadent.org.uk>
To: Julien Cristau <jcristau at debian.org>, 599345 <599345 at bugs.debian.org>
Cc: ilw <ilw at linux.intel.com>, linux-wireless <linux-wireless at vger.kernel.org>
Date: Wed, 06 Oct 2010 23:54:03 +0200
Subject: Re: Bug#599345: linux-image-2.6.32-5-amd64: iwlagn allocation failure

On Wed, 2010-10-06 at 21:19 +0200, Julien Cristau wrote:
> Package: linux-2.6
> Version: 2.6.32-23
> Severity: normal
> 
> iwlagn decided 2 weeks of uptime was enough and it wanted me to reboot,
> because it was unhappy after resume.

You also told me that this machine had no swap enabled, which is an
unusual configuration and restricts the ability of the VM to defragment
memory.  I would recommend adding a small swap file/partition.  However:

> Bit of kern.log:
> 
> Oct  6 21:05:02 radis kernel: [378665.326381] NetworkManager: page allocation failure. order:4, mode:0x40d0
> Oct  6 21:05:02 radis kernel: [378665.326393] Pid: 25555, comm: NetworkManager Not tainted 2.6.32-5-amd64 #1
[...]
> Oct  6 21:05:02 radis kernel: [378665.363630] iwlagn 0000:0c:00.0: kmalloc for auxiliary BD structures failed
[...]

This particular allocation is for an array which is not used for DMA and
therefore could be stored in non-contiguous pages allocated with
vmalloc().  But there may be some good reason not to do this.

Ben.

--- End forwarded message ---

--
http://sascha.silbe.org/
http://www.infra-silbe.de/
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 490 bytes
Desc: not available
URL: <http://lists.sugarlabs.org/private/systems/attachments/20101007/b2b95880/attachment.pgp>