From owner-freebsd-stable@FreeBSD.ORG Thu Dec 22 10:37:55 2005 Return-Path: X-Original-To: freebsd-stable@FreeBSD.org Delivered-To: freebsd-stable@FreeBSD.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 7D7BA16A41F; Thu, 22 Dec 2005 10:37:55 +0000 (GMT) (envelope-from danny@cs.huji.ac.il) Received: from cs1.cs.huji.ac.il (cs1.cs.huji.ac.il [132.65.16.10]) by mx1.FreeBSD.org (Postfix) with ESMTP id 5D07043D66; Thu, 22 Dec 2005 10:37:54 +0000 (GMT) (envelope-from danny@cs.huji.ac.il) Received: from pampa.cs.huji.ac.il ([132.65.80.32]) by cs1.cs.huji.ac.il with esmtp id 1EpNpZ-000IKU-8d; Thu, 22 Dec 2005 12:37:53 +0200 X-Mailer: exmh version 2.7.0 06/18/2004 with nmh-1.0.4 To: Gleb Smirnoff In-Reply-To: Message from Gleb Smirnoff of "Thu, 22 Dec 2005 13:30:27 +0300." <20051222103027.GZ41381@cell.sick.ru> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Thu, 22 Dec 2005 12:37:53 +0200 From: Danny Braniss Message-ID: Cc: freebsd-stable@FreeBSD.org Subject: Re: em bad performance X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 22 Dec 2005 10:37:55 -0000 > On Thu, Dec 22, 2005 at 12:24:42PM +0200, Danny Braniss wrote: > D> ------------------------------------------------------------ > D> Server listening on TCP port 5001 > D> TCP window size: 64.0 KByte (default) > D> ------------------------------------------------------------ > D> [ 4] local 132.65.16.100 port 5001 connected with [6.0/SE7501WV2] port 58122 > D> (intel westvill) > D> [ ID] Interval Transfer Bandwidth > D> [ 4] 0.0-10.0 sec 1.01 GBytes 867 Mbits/sec > D> [ 4] local 132.65.16.100 port 5001 connected with [5.4/SE7501WV2] port 55269 > D> (intel westvill) > D> [ ID] Interval Transfer Bandwidth > D> [ 4] 0.0-10.0 sec 967 MBytes 811 Mbits/sec > D> [ 5] local 132.65.16.100 port 5001 connected with [6.0/SR1435VP2 port 58363 > D> (intel dual xeon/emt64) > D> [ ID] Interval Transfer Bandwidth > D> [ 5] 0.0-10.0 sec 578 MBytes 485 Mbits/sec > D> > D> i've run this several times, and the results are very similar. > D> i also tried i386, and the same bad results. > D> all hosts are connected at 1gb to the same switch. > > So we see a strong drawback between SE7501WV2 and SR1435VP2. Let's compare the NIC > hardware. Can you plese show pciconf -lv | grep -A3 ^em on both motherboards? on a SE7501WV2: em0@pci3:7:0: class=0x020000 card=0x341a8086 chip=0x10108086 rev=0x01 hdr=0x00 vendor = 'Intel Corporation' device = '82546EB Dual Port Gigabit Ethernet Controller (Copper)' class = network on a SR1435VP2: em0@pci4:3:0: class=0x020000 card=0x34668086 chip=0x10768086 rev=0x05 hdr=0x00 vendor = 'Intel Corporation' device = '82547EI Gigabit Ethernet Controller' class = network thanks, danny