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    SubjectRe: 2.6.19-rc1: x86_64 slowdown in lmbench's fork
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    > So unless there is some other array that is sized by NR_IRQs
    > in the context switch path which could account for this in
    > other ways. It looks like you just got unlucky.


    TLB/cache profiling data might be useful?
    My bet would be more on cache effects.

    > The only hypothesis that I can seem to come up with is that maybe
    > you are getting an extra tlb now that you didn't use to.
    > I think the per cpu area is covered by huge pages but maybe not.

    It should be.

    -Andi
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