On Wed, 2009-01-07 at 07:32 -0600, Dimitri Sivanich wrote: > Peter, > > On Wed, Jan 07, 2009 at 10:53:57AM +0100, Peter Zijlstra wrote: > > > > Clock state is kept per-cpu, and locked with a spinlock. When we request > > Admittedly I have not looked at this possibility too closely, but my > initial concern upon looking at sched_clock_cpu() for the UNSTABLE > case was the lock_double_clock() and what sort of contention that > might cause on larger systems under certain conditions. Similar contention would already exist on rq->lock. -- To unsubscribe from this list: send the line "unsubscribe linux-ia64" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
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