From mboxrd@z Thu Jan  1 00:00:00 1970
From: Andi Kleen <andi@firstfloor.org>
Subject: Re: tbench regression on each kernel release from 2.6.22 -> 2.6.28
Date: Tue, 12 Aug 2008 09:11:08 +0200
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	<20080811.141501.01468546.davem@davemloft.net>
	<48A0B037.501@linux-foundation.org>
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Cc: David Miller <davem@davemloft.net>, netdev@vger.kernel.org,
	linux-kernel@vger.kernel.org
To: Christoph Lameter <cl@linux-foundation.org>
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In-Reply-To: <48A0B037.501@linux-foundation.org> (Christoph Lameter's message of "Mon, 11 Aug 2008 16:33:43 -0500")
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Christoph Lameter <cl@linux-foundation.org> writes:

> Maybe what we are seeing is general bloat in kernel execution paths
> due to the growth in complexity?

Wouldn't surprise me. Have you considered doing profiles? 

e.g. just oprofiling the benchmark on the different kernels and see
if there's some obvious difference in the CPU consumers? 

-Andi