From: "Jon Burgess" <Jon_Burgess@eur.3com.com>
To: avery_fay@symantec.com
Cc: linux-kernel@vger.kernel.org
Subject: Re: Gigabit/SMP performance problem
Date: Wed, 8 Jan 2003 12:17:39 +0000 [thread overview]
Message-ID: <80256CA8.00438DDE.00@notesmta.eur.3com.com> (raw)
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
next reply other threads:[~2003-01-08 12:09 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2003-01-08 12:17 Jon Burgess [this message]
-- strict thread matches above, loose matches on Subject: below --
2003-01-08 21:44 Gigabit/SMP performance problem Ronciak, John
2003-01-09 12:49 ` Robert Olsson
2003-01-08 21:12 Feldman, Scott
2003-01-06 20:38 Avery Fay
2003-01-07 18:15 ` Robert Olsson
2003-01-06 20:33 Avery Fay
2003-01-06 20:29 Avery Fay
2003-01-06 21:23 ` Martin J. Bligh
2003-01-07 17:19 ` Mike Black
2003-01-06 20:25 Avery Fay
[not found] <b8ce5e32.0301040439.7bdaa903@posting.google.com>
2003-01-06 18:27 ` Bill Davidsen
2003-01-06 19:09 ` Daniel Blueman
2003-01-06 19:26 ` Brian Tinsley
2003-01-03 20:25 Avery Fay
2003-01-03 21:19 ` Arjan van de Ven
2003-01-03 21:36 ` Martin J. Bligh
2003-01-03 22:31 ` Andrew Theurer
2003-01-03 16:12 Avery Fay
2003-01-03 18:05 ` Martin J. Bligh
2003-01-03 21:49 ` Ron cooper
2003-01-03 21:47 ` Martin J. Bligh
2003-01-03 21:20 ` Robert Olsson
2003-01-04 3:33 ` Anton Blanchard
2003-01-06 19:43 ` Jon Fraser
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