On Wed, 2007-09-19 at 10:06 -0700, Tong Li wrote:

quoted text
> Were the experiments run on a 2-CPU system?

Yes.

quoted text
>  When Xorg experiences large 
> wait time, is it on the same CPU that has the two pinned tasks? If this is 
> the case, then the problem could be X somehow advanced faster and got a 
> larger vruntime then the two pinned tasks, so it had to wait for the 
> pinned ones to catch up before it got a chance to be scheduled.

Good question.  I've not yet been able to capture any event where
vruntimes are that far apart in sched_debug.

	-Mike

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