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From: "Martin J. Bligh" <mbligh@aracnet.com>
To: Avery Fay <avery_fay@symantec.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: Gigabit/SMP performance problem
Date: Mon, 06 Jan 2003 13:23:23 -0800	[thread overview]
Message-ID: <35670000.1041888203@flay> (raw)
In-Reply-To: <OF56E8EAC6.7DEBE879-ON85256CA6.007042A6-85256CA6.0070AD35@symantec.com>

> Well, judging by the fact that a UP kernel can route more traffic (and 
> consequently more interrupts p/s) than an SMP kernel, I think that one cpu 

Umm ... what are you comparing here? How many CPUs on your SMP kernel?
If I have an 8 CPU machine, you think it can handle less traffic than
a 1-cpu machine running a UP kernel?

> 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%).

Can you mail out kernel profiles? What's burning all the time here?

Thanks,

M.


  reply	other threads:[~2003-01-06 21:23 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-01-06 20:29 Gigabit/SMP performance problem Avery Fay
2003-01-06 21:23 ` Martin J. Bligh [this message]
2003-01-07 17:19   ` Mike Black
  -- strict thread matches above, loose matches on Subject: below --
2003-01-08 21:44 Ronciak, John
2003-01-09 12:49 ` Robert Olsson
2003-01-08 21:12 Feldman, Scott
2003-01-08 12:17 Jon Burgess
2003-01-06 20:38 Avery Fay
2003-01-07 18:15 ` Robert Olsson
2003-01-06 20:33 Avery Fay
2003-01-06 20:25 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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