Stephane Eranian wrote:
> 
> Peter,
> 
> On Tue, Feb 04, 2003 at 07:17:01AM +1100, Peter Chubb wrote:
> >
Stephane,

Does the deadlock you describe here look at all like the bug report that
Jack Steiner has submitted for our Altix kernel?
(We're using the O(1) scheduler and pfmon.)  (It certainly sound
similar.) Details attached.

Is anyone working this issue that you know of?

> 
> As for perfmon, there are some known issues with perfmon and the O(1)
> scheduler (deadlocks during ctxsw in SMP). I am not sure it affects your
> particular test case. I had postponed fixing this because I am working on
> a new perfmon code base for 2.5 in which (hopefully) all problems are gone.
> However a somewhat related issue came up last week and I decided to fix
> some of the problems. I will try to give a new patch to David this week.
> 
> As for preemption and perfmon, I haven't had a chance to look at the patch
> yet. There are some assumptions about not being preemptable at several places.
> 
> --
> -Stephane
> 
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-- 
Best Regards,
Ray
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                  Ray Bryant
512-453-9679 (work)         512-507-7807 (cell)
raybry@sgi.com             raybry@austin.rr.com
The box said: "Requires Windows 98 or better",
           so I installed Linux.
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