From owner-freebsd-net@FreeBSD.ORG Mon May 27 13:25:07 2013 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.FreeBSD.org [8.8.178.115]) by hub.freebsd.org (Postfix) with ESMTP id 733C2736 for ; Mon, 27 May 2013 13:25:07 +0000 (UTC) (envelope-from jamespan@cyphy.net) Received: from atl4mhob15.myregisteredsite.com (atl4mhob15.myregisteredsite.com [209.17.115.53]) by mx1.freebsd.org (Postfix) with ESMTP id 4531B1BC for ; Mon, 27 May 2013 13:25:06 +0000 (UTC) Received: from mail.hostingplatform.com ([10.30.71.208]) by atl4mhob15.myregisteredsite.com (8.14.4/8.14.4) with ESMTP id r4RDOwqd003933 for ; Mon, 27 May 2013 09:24:58 -0400 Received: (qmail 12666 invoked by uid 0); 27 May 2013 13:24:56 -0000 Received: from unknown (HELO ?192.168.101.43?) (jamespan@cyphy.net@123.116.56.229) by 0 with ESMTPA; 27 May 2013 13:24:56 -0000 Message-ID: <51A35EA4.301@cyphy.net> Date: Mon, 27 May 2013 21:24:52 +0800 From: JMP User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130510 Thunderbird/17.0.6 MIME-Version: 1.0 To: freebsd-net@freebsd.org Subject: Re: ixgb TSO performance degrades by ~30% between 7.4 and 8.2/9.0/9.1 References: <50872919.90701@networx.ch> In-Reply-To: <50872919.90701@networx.ch> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Content-Filtered-By: Mailman/MimeDel 2.1.14 Cc: Javen Wu X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 27 May 2013 13:25:07 -0000 Hi, I saw a post at http://lists.freebsd.org/pipermail/freebsd-net/2012-October/033660.html discussing performance degrade on ixgbe when enable TSO. We are experiencing the same issue on FreeBSD 8.2 with the latest ixgbe driver (version 2.5.8) from Intel. I am not sure if this is a driver issue or a system issue and if there is a fix for this issue? If yes could you please let us know where we can find the patch? Many thanks in advance! James Pan