linux-kernel - Re: [PATCH] SLUB use cmpxchg

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Message-ID: <20070822134656.GB7539@one.firstfloor.org>
Date:	Wed, 22 Aug 2007 15:46:56 +0200
From:	Andi Kleen <andi@...stfloor.org>
To:	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>
Cc:	Christoph Lameter <clameter@....com>,
	Andi Kleen <andi@...stfloor.org>, akpm@...ux-foundation.org,
	linux-kernel@...r.kernel.org, mingo@...hat.com
Subject: Re: [PATCH] SLUB use cmpxchg_local

On Wed, Aug 22, 2007 at 09:45:33AM -0400, Mathieu Desnoyers wrote:
> Measurements on a AMD64 2.0 GHz dual-core
> 
> In this test, we seem to remove 10 cycles from the kmalloc fast path.
> On small allocations, it gives a 14% performance increase. kfree fast
> path also seems to have a 10 cycles improvement.

Looks good. Anything that makes kmalloc faster is good

-Andi
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