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From: Alan Cox <alan@lxorguk.ukuu.org.uk>
To: David griego <dagriego@hotmail.com>
Cc: jgarzik@pobox.com, alan@storlinksemi.com,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: Alan Shih: "TCP IP Offloading Interface"
Date: 14 Jul 2003 21:05:53 +0100	[thread overview]
Message-ID: <1058213152.561.129.camel@dhcp22.swansea.linux.org.uk> (raw)
In-Reply-To: <Sea2-F4kWkKEsEXlwM9000178d9@hotmail.com>

On Llu, 2003-07-14 at 20:43, David griego wrote:
> Intel Clusters and Network Storage Volume Platforms Lab reported that it 
> takes about 1MHz to process 1Mbps on a PIII.  Using this rule of thumb (they 

1MHz to proces 1Mbit doing what - file I/O to and from disk, web serving
- because ToE or otherwise I still have to process the data I receive
and do something useful with it unless I'm just a router, firewall or
load balancer. If you want to argue about using gate arrays and hardware
to accelerate IP routing, balancing and firewall filter cams then you
might get somewhere - but they dont need to talk TCP.

Also if its 1MHz per 1Mbit worse case and your ToE engine isnt entirely
hardware paths capable of sustaining 10Gbit/sec, what happens when I hit
you with 10Gbit of carefully chosen non optimal frames ?


  parent reply	other threads:[~2003-07-14 19:56 UTC|newest]

Thread overview: 25+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2003-07-14 19:43 David griego
2003-07-14 20:03 ` Jeff Garzik
2003-07-14 20:23   ` Alan Cox
2003-07-14 20:05 ` Alan Cox [this message]
2003-07-14 20:30   ` Shawn
2003-07-15  5:58   ` Werner Almesberger
     [not found] <Sea2-F66GGORm1u51rM00012573@hotmail.com>
2003-07-15 11:18 ` Alan Cox
  -- strict thread matches above, loose matches on Subject: below --
2003-07-14 21:51 David griego
2003-07-14 20:29 David griego
2003-07-14 20:23 David griego
2003-07-14 20:19 David griego
2003-07-14 20:31 ` Alan Shih
2003-07-14 20:34 ` Alan Cox
2003-07-14 21:53   ` Deepak Saxena
2003-07-17 22:31     ` Bill Davidsen
2003-07-14 19:14 David griego
2003-07-14 19:26 ` Jeff Garzik
2003-07-15 12:42   ` Jesse Pollard
2003-07-14 19:46 ` Alan Cox
2003-07-14 18:46 David griego
2003-07-14 19:02 ` Jeff Garzik
2003-07-14 21:22   ` Deepak Saxena
2003-07-14 21:45     ` Jeff Garzik
2003-07-15  5:27     ` Werner Almesberger
2003-07-14 19:42 ` Alan Cox

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