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From: Karsten Desler <kdesler@soohrt.org>
To: jamal <hadi@cyberus.ca>
Cc: Bernd Eckenfels <ecki-news2004-05@lina.inka.de>,
	"David S. Miller" <davem@davemloft.net>,
	netdev@oss.sgi.com, linux-kernel@vger.kernel.org
Subject: Re: _High_ CPU usage while routing (mostly) small UDP packets
Date: Tue, 7 Dec 2004 03:54:56 +0100	[thread overview]
Message-ID: <20041207025456.GA525@soohrt.org> (raw)
In-Reply-To: <1102387595.1088.48.camel@jzny.localdomain>

* jamal wrote:
> 
> Your numbers are very suspect. You may be having other issues in the
> box. You should be able to do much higher packet rates even with
> iptables compiled in.

I know, and I have no idea why I'm not.

> Some numbers at:
> 
> http://www.suug.ch/sucon/04/slides/pkt_cls.pdf
> 
> If all you need is std filtering then consider using tc actions.

Thanks, I'll look into it.

> I do have a suspicion that your problem has to do with your machine
> more than it does with Linux.

But what could be the reason? I'm really out of ideas.
The only thing I can think off is the 66/64 PCI bus and the
disadvantageous placement of the PCI cards, but neither should cause a
higher CPU usage. If the bus couldn't keep up, I'd get packetloss.

- Karsten

  reply	other threads:[~2004-12-07  2:55 UTC|newest]

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-12-06 20:53 _High_ CPU usage while routing (mostly) small UDP packets Karsten Desler
2004-12-06 21:48 ` David S. Miller
2004-12-06 22:41   ` Karsten Desler
2004-12-06 23:53     ` Bernd Eckenfels
2004-12-07  0:20       ` Karsten Desler
2004-12-07  2:46         ` jamal
2004-12-07  2:54           ` Karsten Desler [this message]
2004-12-07  3:18             ` jamal
2004-12-07  3:24               ` Karsten Desler
2004-12-07  3:30                 ` jamal
2004-12-07  4:02                   ` Karsten Desler
2004-12-07 10:21                     ` Karsten Desler
2004-12-07 12:34                       ` jamal
2004-12-07 13:14                         ` Karsten Desler
2004-12-06 23:56     ` Con Kolivas
2004-12-07  0:18       ` Karsten Desler
2004-12-07 10:47     ` P
2004-12-07 11:21       ` Karsten Desler
2004-12-07 12:38         ` Robert Olsson
2004-12-07 12:50           ` Karsten Desler
2004-12-07 13:04             ` jamal
2004-12-07 13:11               ` Karsten Desler
2004-12-07 13:39               ` P
2004-12-07 18:38         ` Karsten Desler
2004-12-08  5:39         ` Willy Tarreau
2004-12-08 13:08           ` Karsten Desler
2004-12-08 13:27             ` jamal
2004-12-07 21:10 ` Karsten Desler
2004-12-07 22:40   ` Robert Olsson
2004-12-08 22:06     ` Karsten Desler
2004-12-08  4:31   ` jamal
2004-12-08 13:26     ` Karsten Desler

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