Messages in this thread | | | Date | Wed, 17 Jan 2007 08:50:04 +0100 | From | Pierre Peiffer <> | Subject | Re: [PATCH 2.6.20-rc4 0/4] futexes functionalities and improvements |
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Ingo Molnar a écrit : > * Ulrich Drepper <drepper@redhat.com> wrote: > >>> what do you mean by that - which is this same resource? >> From what has been said here before, all futexes are stored in the >> same list or hash table or whatever it was. I want to see how that >> code behaves if many separate processes concurrently use futexes. > > futexes are stored in the bucket hash, and these patches do not change > that. The pi-list that was talked about is per-futex. So there's no > change to the way futexes are hashed nor should there be any scalability > impact - besides the micro-impact that was measured in a number of ways > - AFAICS.
Yes, that's completely right !
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