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[dm-devel] Re: 2.6.24 Kernel Soft Lock Up with heavy I/O in dm-crypt
- From: Milan Broz <mbroz redhat com>
- To: Alasdair G Kergon <agk redhat com>
- Cc: Ritesh Raj Sarraf <rrs researchut com>, Christophe Saout <christophe saout de>, dm-crypt saout de, linux-kernel vger kernel org, dm-devel redhat com, rjmaomao gmail com, Herbert Xu <herbert gondor apana org au>, Andrew Morton <akpm linux-foundation org>, Yan Li <elliot li tech gmail com>
- Subject: [dm-devel] Re: 2.6.24 Kernel Soft Lock Up with heavy I/O in dm-crypt
- Date: Fri, 06 Jun 2008 08:46:20 +0200
Yan Li wrote:
> On Mon, Jun 02, 2008 at 02:51:04PM +0200, Milan Broz wrote:
>> Patch for 2.6.24 kernel
>> Add cond_resched() to prevent stuck in big bio processing.
>
> This patch actual has lead to performance _gain_.
hmmm, nice:)
> With patched kernel, soft lockup _no longer_ occurred.
Alasdair, please could you move this patch back to actual tree
and sent it upstream?
We have at least two separate reports confirming that it fixes
the problem.
Milan
--
mbroz redhat com
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