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SubjectRe: userspace irq balancer
On Mon, 26 May 2003, William Lee Irwin III wrote:
>> It's done to acknowledge every interrupt. Also, there is additional
>> cost associated with bouncing the lock's cacheline.

On Mon, May 26, 2003 at 10:45:20PM -0400, Zwane Mwaikambo wrote:
> Bah, determining owning ioapic of an irq would get too ugly, you can have
> the same irq connected to multiple ioapics so which to lock?

It tends to be all or one, detectable with IO_APIC_IRQ().


-- wli
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