linux-kernel - Re: Hyperthreading performance oddities

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Date:	Sat, 08 Mar 2008 08:12:10 +0100
From:	belcampo <belcampo@...net.nl>
To:	Andi Kleen <andi@...stfloor.org>
Cc:	Chris Snook <csnook@...hat.com>,
	Andrew Buehler <abuehler.kernel@...il.com>,
	Frederik Deweerdt <deweerdt@...e.fr>,
	linux-kernel@...r.kernel.org
Subject: Re: Hyperthreading performance oddities

Hi all,

Back to basics:

Kernel 2.6.22.9 smp hyperthreading needs 338.143s
with 2.6.17 kernel smp/hyperthreading needs 247.704s
for exactly the same job on the same machine.

For me it's not about HT vs. non-MT

Henk Schoneveld

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