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From: "Jon Burgess" <Jon_Burgess@eur.3com.com>
To: avery_fay@symantec.com
cc: linux-kernel@vger.kernel.org
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Date: Wed, 8 Jan 2003 12:17:39 +0000
Subject: Re: Gigabit/SMP performance problem
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Avery Fay wrote:
> can probably handle all of the interrupts. Really the issue I'm
> trying to solve is not routing performance, but rather the fact
> that SMP routing performance is worse while using twice
> the cpu time (2 cpu's at around 95% vs. 1 at around 95%).

Please forgive me if this is a silly suggestion, but are you sure this is a real
95% utilisation in the 2 CPU case. I think some versions of top show 0..200% for
the 2 CPU case, and therefore 95% utilisation is represents a  real CPU
utilisation of 47.5%

     Jon


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