On 03/03/13 01:56, Ben Hutchings wrote:
> Control: tag -1 moreinfo fixed-upstream
>
> On Thu, 2013-02-28 at 15:28 +0000, Chris Boot wrote:
>> We are also seeing this on an NFS server hosing home directories for a
>> fairly large deployment of Debian desktop systems. The symptoms and perf
>> top agree perfectly with what the reporter is experiencing.
>>
>> Please consider backporting said patch to the 3.2 kernel for
>> wheezy/squeeze-backports.
>
> Please test the attached backport as explained here:
> http://kernel-handbook.alioth.debian.org/ch-common-tasks.html#s-common-official
Hi Ben,
I have been testing a 3.2 kernel with both the patch you backported as
well as 64a284d07c7d84299a90826950079a8ef11e8204 from upstream ("nfsd4:
maintain one seqid stream per (lockowner, file)"). These patches
together appear to have resolved the issues our client has been seeing,
though this is not running in a production environment just yet.
I think the other patch (64a284d07c7d84299a90826950079a8ef11e8204) is
also quite important in resolving this problem, as it reduces the number
of entries in the lockowner hash table. Would this be a patch you would
entertain to backport as well?
Best regards,
Chris
--
|Chris Boot
|Tiger Computing Ltd
|"Linux for Business"
|
|Tel: 033 0088 1511
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|
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