linux-kernel - Re: [PATCH 0/3] FUTEX : new PRIVATE futexes, SMP and NUMA improvements

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Date:	Wed, 4 Apr 2007 00:16:09 -0700
From:	"Ulrich Drepper" <drepper@...il.com>
To:	"Eric Dumazet" <dada1@...mosbay.com>
Cc:	"Nick Piggin" <nickpiggin@...oo.com.au>,
	"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

On 3/15/07, Eric Dumazet <dada1@...mosbay.com> wrote:
> But fact is POSIX defined PRIVATE and SHARED, allowing clear separation, and
> optimal performance if carefuly implemented. Time has come for linux to have
> better threading performance.

Now that I've been pointed to the thread I can comment on it.

Yes, this approach makes a lot of sense.  Programs which shared syn
objects without declaring them correctly are broken and deserve to
fail.  It would be quite a lot of change in libpthread but it's
manageable.

I haven't tested the code nor will I likely do until I get a Fedora
kernel with it.  So, convince DaveJ to take it for testing.
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