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SubjectRe: [patch-mm 07/23] Tick management: spread timer interrupt
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On Sun, 2007-06-10 at 16:16 +0200, Andreas Mohr wrote:
> Hi,
>
> On Sun, Jun 10, 2007 at 09:44:05AM -0000, Thomas Gleixner wrote:
> > From: john stultz <johnstul@us.ibm.com>
> >
> > After discussing w/ Thomas over IRC, it seems the issue is the sched
> > tick fires on every cpu at the same time, causing extra lock contention.
>
> Hmm, the cpu-specific offset calculation isn't too expensive, hopefully?
> (div/mul in patch, maybe this could be done differently)

That's one time during setup, no hot path.

tglx


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