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SubjectRe: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance

* Linus Torvalds <torvalds@linux-foundation.org> wrote:

>
>
> On Tue, 23 Mar 2010, Anton Starikov wrote:
> >
> > I think we got a winner!
> >
> > Problem seems to be fixed.
> >
> > Just for record, I used next patches:
> >
> > 59c33fa7791e9948ba467c2b83e307a0d087ab49
> > 5d0b7235d83eefdafda300656e97d368afcafc9a
> > 1838ef1d782f7527e6defe87e180598622d2d071
> > 4126faf0ab7417fbc6eb99fb0fd407e01e9e9dfe
> > bafaecd11df15ad5b1e598adc7736afcd38ee13d
> > 0d1622d7f526311d87d7da2ee7dd14b73e45d3fc
>
> Ok. If you have performance numbers for before/after these patches for
> your actual workload, I'd suggest posting them to stable@kernel.org, and
> maybe those rwsem fixes will get back-ported.
>
> The patches are pretty small, and should be fairly safe. So they are
> certainly stable material.

We havent had any stability problems with them, except one trivial build bug,
so -stable would be nice.

Ingo


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