Messages in this thread | | | Date | Tue, 15 Jun 2004 20:10:57 -0700 (PDT) | From | Linus Torvalds <> | Subject | Re: [PATCH] Performance regression in 2.6.7-rc3 |
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On Wed, 16 Jun 2004, Nick Piggin wrote: > > I think balance on clone probably needs to be turned off by default > presently. > > It slows down a simple thread creation test by a factor of 7(!) here, > and has quite a few not too difficult to imagine performance problems.
I agree. However, I still think we should do my suggested "wake_up_new(p,clone_flags)" thing, and then have the logic on whether to try to care about threading or not be in schedule.c, not in kernel/fork.c.
The fact is, fork.c shouldn't try to make scheduling decisions. But it could inform the scheduler about the new process, and THAT can then make the decisions.
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