From owner-freebsd-net@FreeBSD.ORG Fri Aug 26 05:53:47 2005 Return-Path: X-Original-To: freebsd-net@freebsd.org Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 6CE2416A41F for ; Fri, 26 Aug 2005 05:53:47 +0000 (GMT) (envelope-from jmg@hydrogen.funkthat.com) Received: from hydrogen.funkthat.com (gate.funkthat.com [69.17.45.168]) by mx1.FreeBSD.org (Postfix) with ESMTP id AC0E443D48 for ; Fri, 26 Aug 2005 05:53:46 +0000 (GMT) (envelope-from jmg@hydrogen.funkthat.com) Received: from hydrogen.funkthat.com (localhost.funkthat.com [127.0.0.1]) by hydrogen.funkthat.com (8.13.3/8.13.3) with ESMTP id j7Q5rj83047144; Thu, 25 Aug 2005 22:53:45 -0700 (PDT) (envelope-from jmg@hydrogen.funkthat.com) Received: (from jmg@localhost) by hydrogen.funkthat.com (8.13.3/8.13.3/Submit) id j7Q5rhFo047143; Thu, 25 Aug 2005 22:53:43 -0700 (PDT) (envelope-from jmg) Date: Thu, 25 Aug 2005 22:53:43 -0700 From: John-Mark Gurney To: Dave+Seddon Message-ID: <20050826055343.GF30465@funkthat.com> Mail-Followup-To: Dave+Seddon , "Gary D. Margiotta" , freebsd-net@freebsd.org References: <20050825220248.E9058@kerplunk.tbe.net> <1125023574.72285.TMDA@seddon.ca> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1125023574.72285.TMDA@seddon.ca> User-Agent: Mutt/1.4.2.1i X-Operating-System: FreeBSD 5.4-RELEASE-p1 i386 X-PGP-Fingerprint: B7 EC EF F8 AE ED A7 31 96 7A 22 B3 D8 56 36 F4 X-Files: The truth is out there X-URL: http://resnet.uoregon.edu/~gurney_j/ X-Resume: http://resnet.uoregon.edu/~gurney_j/resume.html Cc: freebsd-net@freebsd.org, "Gary D. Margiotta" Subject: Re: Aggregate network interfaces X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: John-Mark Gurney List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 26 Aug 2005 05:53:47 -0000 Dave+Seddon wrote this message on Fri, Aug 26, 2005 at 12:32 +1000: > - Gig cards are cheap. yep... $25 for a card, and $100 will get you a 8 port switch that will do jumbo frames (MTU sizes of 9000 and more instead of the default 1500)... and you can even use the same wiring, no need for cat5e, cat5 works just fine for gige (as long as you wired all four pairs through)... > - PCI bus throughput is really bad (like 32MB/s) nope, PCI raw bandwidth is 133MB/s... 33.3mhz * 4 bytes/cycle, though some of that is lost to command overhead, but you can do 100MB/s on PCI if the bridge doesn't interrupt your card too much... The usual problem is that the PCI bus bandwidth is shared with your HD, so you'll use 50MB/sec reading from your HD, and then the other 50MB/sec out the gige.. (if you're lucky).. -- John-Mark Gurney Voice: +1 415 225 5579 "All that I will do, has been done, All that I have, has not."