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    SubjectRe: 2.6.19-rc1: Slowdown in lmbench's fork
    On Thu, 2006-11-02 at 11:33 -0700, Eric W. Biederman wrote:

    > My only partial guess is that it might be worth adding the per cpu
    > variables my patch adds without any of the corresponding code changes.
    > And see if adding variables to the per cpu area is what is causing the
    > change.
    > The two tests I can see in this line are:
    > - to add the percpu vector_irq variable.
    > - to increase NR_IRQs.

    Increasing the NR_IRQs resulted in the regression.
    Adding the percpu vector_irq variable did not cause any changes.

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