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SubjectRe: Slow pthread_create() under high load
> If you want to see this changes get the kernel changes in place.
> There are various patches floating around which combined will allow a
> correct and fast implementation. But they were not added.

The problem he is seeing however appears unrelated to the fact posix
threads is a braindamaged pile of crap. Its because the scheduler penalises
across forks as part of its fairness approach. Ingo showed that was in
fact wrong and posted some algorithm changes for 2.3.9x

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