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

[Stefan Unterhauser]

interesting ... thx silbe

On Wed, Oct 6, 2010 at 6:31 PM, Sascha Silbe
<sascha-ml-reply-to-2010-3 at silbe.org> wrote:
> 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/
>
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