linux-kernel - Re: [PATCH][RFC]: mutex: adaptive spin

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Message-ID: <20090106150105.GO2002@parisc-linux.org>
Date:	Tue, 6 Jan 2009 08:01:05 -0700
From:	Matthew Wilcox <matthew@....cx>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ingo Molnar <mingo@...e.hu>, Andi Kleen <andi@...stfloor.org>,
	Chris Mason <chris.mason@...cle.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>,
	linux-btrfs <linux-btrfs@...r.kernel.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Steven Rostedt <rostedt@...dmis.org>,
	Gregory Haskins <ghaskins@...ell.com>,
	Nick Piggin <npiggin@...e.de>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH][RFC]: mutex: adaptive spin

On Tue, Jan 06, 2009 at 01:21:41PM +0100, Peter Zijlstra wrote:
> > It's hard to tell how it would impact inbetween workloads - i guess it 
> > needs to be measured on a couple of workloads.
> 
> Matthew volunteered to run something IIRC.

I've sent it off to two different teams at Intel for benchmarking.  One
is a database load, and one is a mixed load.

-- 
Matthew Wilcox				Intel Open Source Technology Centre
"Bill, look, we understand that you're interested in selling us this
operating system, but compare it to ours.  We can't possibly take such
a retrograde step."
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