Rescheduling Interrupts

[Peter Hüwe]

Hmm but the cpu is almost 100% idle ?
Or do you mean by overloaded that too much interrupts are occuring and that 
the "interrupt channels" are somehow full? 
Any chance to find out what causes that overload? 

Peter


Am Samstag 08 Dezember 2007 22:00:24 schrieb Arjan van de Ven:
> Peter Hüwe wrote:
> > Hi,
> >
> > I just launched powertop on my amd64 machine and the top wakeup cause is
> >
> >   33,8% ( 92,9)      <kernel IPI> : Rescheduling interrupts
> >
> > can someone tell me what this exactly means? How do I get rid of them?
>
> these are caused by the kernel; the kernel is waking a cpu up to start
> executing code there, because the cpu that the kernel is on at that
> point is overloaded.
>
> Having said that, I'm getting the impression the 2.6.24-rc kernel is a
> tad... too agressive in doing this
>
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