Messages in this thread |  | | | Subject | Re: 2.6.19-rc1: Slowdown in lmbench's fork | | From | Tim Chen <> | | Date | Thu, 02 Nov 2006 10:34:13 -0800 |
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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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