Re: [PATCH 0/6] x86/cpu hotplug: Wake up offline CPU via mwait ornmi

From: Peter Zijlstra
Date: Wed Jun 06 2012 - 04:40:47 EST


On Tue, 2012-06-05 at 15:12 -0700, Paul E. McKenney wrote:
> > Well, no not like that, but I think we could do with some coupling
> > there. Like steer active interrupts away when they keep hitting idle
> > state.
>
> But the guys who are more fanatic about performance than about energy
> efficiency would -want- the interrupts to hit the idle CPUs, right?

Yeah, this is why you want a performance/power knob somewhere.
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