Re: [PATCH] 2.4.18 scheduler bugs
Joe Korty (jak@rudolph.ccur.com)
Fri, 15 Mar 2002 16:59:31 -0500 (EST)
> > [...] But on the Athlon the IPI isnt going down a little side channel
> > between cpus.
>
> but even in the Athlon case an IPI is still an IRQ entry, which will add
> at least 200 cycles or more to the idle wakeup latency.
It is an idle cpu that is spending those 200 cycles.
Joe
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