From: Andi Kleen <andi@firstfloor.org>
To: Christoph Lameter <cl@linux-foundation.org>
Cc: David Miller <davem@davemloft.net>,
netdev@vger.kernel.org, linux-kernel@vger.kernel.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 [thread overview]
Message-ID: <87r68u1zeb.fsf@basil.nowhere.org> (raw)
In-Reply-To: <48A0B037.501@linux-foundation.org> (Christoph Lameter's message of "Mon, 11 Aug 2008 16:33:43 -0500")
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
next prev parent reply other threads:[~2008-08-12 7:11 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-08-11 18:36 tbench regression on each kernel release from 2.6.22 -> 2.6.28 Christoph Lameter
2008-08-11 18:50 ` Kok, Auke
2008-08-11 18:56 ` Christoph Lameter
2008-08-11 21:15 ` David Miller
2008-08-11 21:33 ` Christoph Lameter
2008-08-11 21:50 ` David Miller
2008-08-11 21:56 ` Kok, Auke
2008-08-11 22:11 ` Rick Jones
2008-08-12 7:11 ` Andi Kleen [this message]
2008-08-12 18:57 ` Christoph Lameter
2008-08-12 8:13 ` Ilpo Järvinen
2008-08-18 2:05 ` Zhang, Yanmin
2008-08-18 7:53 ` Ilpo Järvinen
2008-08-19 0:56 ` Zhang, Yanmin
2008-08-18 14:07 ` Christoph Lameter
2008-08-18 14:31 ` Ray Lee
2008-08-18 14:34 ` Christoph Lameter
2008-08-19 1:01 ` Zhang, Yanmin
2008-08-18 1:48 ` Zhang, Yanmin
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