Messages in this thread | | | Date | Fri, 3 Jul 2009 13:04:21 -0700 | From | Arjan van de Ven <> | Subject | Re: >10% performance degradation since 2.6.18 |
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On Fri, 3 Jul 2009 21:54:58 +0200 Andi Kleen <andi@firstfloor.org> wrote:
> > That would seem to be a fruitful avenue of > > investigation -- whether limiting the cards to a single RX/TX > > interrupt would be advantageous, or whether spreading the eight > > interrupts out over the CPUs would be advantageous. > > The kernel should really do the per cpu binding of MSIs by default.
... so that you can't do power management on a per socket basis? hardly a good idea.
just need to use a new enough irqbalance and it will spread out the interrupts unless your load is low enough to go into low power mode.
-- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org
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