Messages in this thread | | | Date | Sat, 4 Jul 2009 01:35:05 +0200 | From | Andi Kleen <> | Subject | Re: >10% performance degradation since 2.6.18 |
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> ... so that you can't do power management on a per socket basis? > hardly a good idea.
Interrupts should only happen when the socket did spent time submitting the work for them. Typically on drivers I'm familiar with the return MSI is tied to the CPU that did submit the work item
> 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.
When that load is low then likely you won't get many interrupts anyways.
-Andi
-- ak@linux.intel.com -- Speaking for myself only.
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