netdev - Re: kernel 2.6.37 : oops in cleanup

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Date:	Wed, 02 Feb 2011 16:08:56 +0100
From:	Eric Dumazet <eric.dumazet@...il.com>
To:	Yann Dupont <Yann.Dupont@...v-nantes.fr>
Cc:	linux-kernel@...r.kernel.org, netdev <netdev@...r.kernel.org>
Subject: Re: kernel 2.6.37 : oops in cleanup_once

Le mercredi 02 février 2011 à 16:04 +0100, Yann Dupont a écrit :
> >
> Ok, will do it at 18:30 CET (to minimize impact)
> It the suspected bug SLUB related ?
> 

no : It can be a corruption from another part of kernel.

> The 2.6.34.2 kernel previously used on that server used SLAB.
> 
> 
> 2 questions :
> -How can I be sure slub_nomerge is active ? Boot message ?


# ls -l /sys/kernel/slab/

If you have symlinks : merge is on (default)

If you dont have symlinks : nomerge is in action

> -Is there a very severe impact on performance ?
> 

not at all

> Regards,
> 


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