Re: Tracing down 250ms open/chdir calls

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Hi Trond,

Trond Myklebust schrieb:
> 2.6.27.7 has a known NFS client performance bug due to a change in the
> authentication code. The fix was merged in 2.6.27.9: see the commit
> http://git.kernel.org/?p=linux/kernel/git/stable/linux-2.6.27.y.git&a=commitdiff&h=a0f04d0096bd7edb543576c55f7a0993628f924a

Maybe that's also a reason why we don't see it that often anymore -
although the user load has shifted a bit also. We are running 2.7.27.14
(and .15 since Friday).

Thanks for letting me know, I'll probably re-run the tests again with a
newer kernel.

Cheers

Carsten
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