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Date: Fri, 16 Mar 2007 07:15:16 +1100 From: Nick Piggin <nickpiggin@...oo.com.au> To: Eric Dumazet <dada1@...mosbay.com> CC: Ulrich Drepper <drepper@...il.com>, Andrew Morton <akpm@...ux-foundation.org>, Ingo Molnar <mingo@...e.hu>, Andi Kleen <ak@...e.de>, Ravikiran G Thirumalai <kiran@...lex86.org>, "Shai Fultheim (Shai@...lex86.org)" <shai@...lex86.org>, pravin b shelar <pravin.shelar@...softinc.com>, linux-kernel@...r.kernel.org Subject: Re: [PATCH 0/3] FUTEX : new PRIVATE futexes, SMP and NUMA improvements Eric Dumazet wrote: > Hi > > I'm pleased to present these patches which improve linux futex performance and > scalability, on both UP, SMP and NUMA configs. > > I had this idea last year but I was not understood, probably because I gave > not enough explanations. Sorry if this mail is really long... Yes please, this is really nice. The mmap_sem is already overworked just doing real mm stuff, let alone making it the central point of our "scalable" thread synchronisation syscall. To summarise: not only will this make futexes scale much better, but it will also take some load off mmap_sem. -- SUSE Labs, Novell Inc. Send instant messages to your online friends http://au.messenger.yahoo.com - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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