linux-kernel - Re: [this_cpu_xx V6 7/7] this_cpu: slub aggressive use of this

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Message-ID: <alpine.DEB.1.10.0910131624330.13756@gentwo.org>
Date:	Tue, 13 Oct 2009 16:25:18 -0400 (EDT)
From:	Christoph Lameter <cl@...ux-foundation.org>
To:	Pekka Enberg <penberg@...helsinki.fi>
cc:	David Rientjes <rientjes@...gle.com>, Tejun Heo <tj@...nel.org>,
	linux-kernel@...r.kernel.org,
	Mathieu Desnoyers <mathieu.desnoyers@...ymtl.ca>,
	Mel Gorman <mel@....ul.ie>,
	Zhang Yanmin <yanmin_zhang@...ux.intel.com>
Subject: Re: [this_cpu_xx V6 7/7] this_cpu: slub aggressive use of this_cpu
 operations in the hotpaths

On Tue, 13 Oct 2009, Pekka Enberg wrote:

> I wonder how reliable these numbers are. We did similar testing a while back
> because we thought kmalloc-96 caches had weird cache behavior but finally
> figured out the anomaly was explained by the order of the tests run, not cache
> size.

The tests were all run directly after booting the respective kernel.
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