Re: [PATCH 2.6.20-rc4 0/4] futexes functionalities and improvements

[Pierre Peiffer <pierre.peiffer@bull.net>]

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 !

--
Pierre
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