On Thu, Jan 05, 2006 at 02:22:37AM +0100, Andi Kleen wrote:
> Arjan van de Ven <[email protected]> writes:
>
>
> > sounds like we need some sort of profiler or benchmarker or at least a
> > tool that helps finding out which timers are regularly firing, with the
> > aim at either grouping them or trying to reduce their disturbance in
> > some form.
>
> I did one some time ago for my own noidletick patch. Can probably dig
> it out again. It just profiled which timers interrupted idle.
>
> Executive summary for my laptop: worst was the keyboard driver (it ran
> some polling driver to work around some hardware bug, but fired very
> often) , followed by the KDE desktop (should be mostly
> fixed now, I complained) and the X server and some random kernel
> drivers.
>
> I haven't checked recently if keyboard has been fixed by now.
it was a little further down the list from the others I posted,
but it is still there fairly high in the list of offenders,
even though I wasn't touching keyboard/mouse (in fact, it was several feet
away from me, I had ssh'd to it for tests).
Dave
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