> Excuse me, but WTF do they spin on the sched_yield() in the first place?
> _That_ sounds like utterly broken...
I agree it is broken, but it was considered a method of implementing
user-space locking for a long time..
The problem is in LinuxThreads mostly, I guess, according to Andrew.
But the big offender we hear about ten times a day is Open Office, which
calls sched_yield() after a lot of GUI operations, seemingly in the name
of interactivity. It is busted and Red Hat shipped a yield-less Open
Office in RH9 which works fine.
Robert Love
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