From owner-freebsd-net@FreeBSD.ORG Thu Oct 20 12:49:42 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 CDE4916A41F; Thu, 20 Oct 2005 12:49:42 +0000 (GMT) (envelope-from mv@roq.com) Received: from p4.roq.com (ns1.ecoms.com [207.44.130.137]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8B7CE43D7C; Thu, 20 Oct 2005 12:49:36 +0000 (GMT) (envelope-from mv@roq.com) Received: from p4.roq.com (localhost.roq.com [127.0.0.1]) by p4.roq.com (Postfix) with ESMTP id E6CA64CDEF; Thu, 20 Oct 2005 12:49:50 +0000 (GMT) Received: from [192.168.0.3] (ppp157-158.static.internode.on.net [150.101.157.158]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by p4.roq.com (Postfix) with ESMTP id CA95E4CDFC; Thu, 20 Oct 2005 12:49:44 +0000 (GMT) Message-ID: <43579259.8060701@roq.com> Date: Thu, 20 Oct 2005 22:49:29 +1000 From: Michael VInce User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US; rv:1.7.12) Gecko/20051019 X-Accept-Language: en-us, en MIME-Version: 1.0 To: =?ISO-8859-1?Q?Sten_Daniel_S=F8rsdal?= References: <434FABCC.2060709@roq.com> <20051014205434.C66245@fledge.watson.org> <43564800.3010309@roq.com> <4356BBA1.3000103@wm-access.no> In-Reply-To: <4356BBA1.3000103@wm-access.no> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 8bit X-Virus-Scanned: ClamAV using ClamSMTP Cc: freebsd-net@freebsd.org, stable@freebsd.org Subject: Re: Network performance 6.0 with netperf X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 20 Oct 2005 12:49:43 -0000 Sten Daniel Sørsdal wrote: >Michael VInce wrote: > > > >>I reinstalled the netperf to make sure its the latest. >> >>I have also decided to upgrade Server-C (the i386 5.4 box) to 6.0RC1 and >>noticed it gave a large improvement of network performance with a SMP >>kernel. >> >>As with the network setup ( A --- B --- C ) with server B being the >>gateway, doing a basic 'fetch' from the gateway (B) to the Apache server >>(C) it gives up to 700mbits/sec transfer performance, doing a fetch from >>server A thus going through the gateway gives slower but still decent >>performance of up to 400mbits/sec. >> >> > >Are you by any chance using PCI NIC's? PCI Bus is limited to somewhere around 1 Gbit/s. >So if you consider; >Theoretical maxium = ( 1Gbps - pci_overhead ) > > > The 4 ethernet ports on the Dell server are all built-in so I am assuming they are on the best bus available. Mike