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SubjectRe: SATA Harddisk speed drop of 100 MB/s
Andrew Morton wrote:
> Please see http://bugzilla.kernel.org/show_bug.cgi?id=8636
>
> In that report a pretty large slowdown with CFQ has been identified.
> Jens has plunked a patch in there (Comment #50) and then ran away on
> vacation.
>
> If someone can test that patch and demonstrate its goodness, I'll
> queue it up, thanks.

This has unfortunately split up into two threads. I identified the root
cause of the slowdown as NCQ in the thread "Re: SATA RAID5 speed drop of
100 MB/s" on LKML.

Jeff


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