Re: [performance bug] kernel building regression on 64 LCPUsmachine

From: Alex,Shi
Date: Thu Mar 24 2011 - 02:43:45 EST


On Wed, 2011-03-23 at 01:46 +0800, Jeff Moyer wrote:
> Jan Kara <jack@xxxxxxx> writes:
>
> > Jeff, I suppose the log files of fs_mark processes are on the same
> > device as the test directory, aren't they - that might explain the
> > flusher thread doing IO? The patch below
>
> No. My test environments are sane. The file system is on a completely
> separate disk and it is unmounted and remounted in between each run.
> That should take care of any lost flushes.

Jeff, why not give a try with Jan's fs_mark patch? Maybe the result show
something change. :)

>
> Did you receive my last couple of private emails commenting on the trace
> data?
>
> Cheers,
> Jeff


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