From owner-freebsd-stable@FreeBSD.ORG Mon Jan 25 18:49:49 2010 Return-Path: Delivered-To: stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C958C1065693 for ; Mon, 25 Jan 2010 18:49:49 +0000 (UTC) (envelope-from lars.eggert@nokia.com) Received: from mgw-mx06.nokia.com (smtp.nokia.com [192.100.122.233]) by mx1.freebsd.org (Postfix) with ESMTP id 3D3F38FC0C for ; Mon, 25 Jan 2010 18:49:48 +0000 (UTC) Received: from vaebh105.NOE.Nokia.com (vaebh105.europe.nokia.com [10.160.244.31]) by mgw-mx06.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o0PInj8B032305; Mon, 25 Jan 2010 20:49:46 +0200 Received: from esebh102.NOE.Nokia.com ([172.21.138.183]) by vaebh105.NOE.Nokia.com with Microsoft SMTPSVC(6.0.3790.3959); Mon, 25 Jan 2010 20:49:45 +0200 Received: from mgw-sa02.ext.nokia.com ([147.243.1.48]) by esebh102.NOE.Nokia.com over TLS secured channel with Microsoft SMTPSVC(6.0.3790.3959); Mon, 25 Jan 2010 20:49:45 +0200 Received: from mail.fit.nokia.com (esdhcp030222.research.nokia.com [172.21.30.222]) by mgw-sa02.ext.nokia.com (Switch-3.3.3/Switch-3.3.3) with ESMTP id o0PInhcU005264 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Mon, 25 Jan 2010 20:49:44 +0200 X-Virus-Status: Clean X-Virus-Scanned: clamav-milter 0.95.3 at fit.nokia.com Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: multipart/signed; boundary=Apple-Mail-16-522846224; protocol="application/pkcs7-signature"; micalg=sha1 From: Lars Eggert In-Reply-To: <147432021001251038r69393ab3m1a797e58f9fa905a@mail.gmail.com> Date: Mon, 25 Jan 2010 19:49:31 +0100 Message-Id: <02307620-ECDC-4E8B-A5B1-FF8491E226C4@nokia.com> References: <20091201.102925.218343479.hrs@allbsd.org> <2a41acea0912021249w1aed8e83kf89ceb1e6041edaf@mail.gmail.com> <2a41acea0912021514r2d44dd33n4c364518d7fe1703@mail.gmail.com> <20091203.182931.129751456.hrs@allbsd.org> <4B43F6EE.3010308@ucla.edu> <147432021001242047k659a26d0s44b35164920aeb74@mail.gmail.com> <95D3CB82-BC44-491D-86E4-5CB82F89C0FC@nokia.com> <147432021001250825p202914a7ka5a2c1d28d96bac3@mail.gmail.com> <20100125182257.GG1187@michelle.cdnetworks.com> <147432021001251038r69393ab3m1a797e58f9fa905a@mail.gmail.com> To: Nick Rogers X-Mailer: Apple Mail (2.1077) X-Greylist: Sender succeeded SMTP AUTH, not delayed by milter-greylist-4.2.3 (mail.fit.nokia.com [0.0.0.0]); Mon, 25 Jan 2010 20:49:37 +0200 (EET) X-Spam-Status: No, score=-102.2 required=5.0 tests=ALL_TRUSTED,AWL,BAYES_00, MISSING_SUBJECT,USER_IN_WHITELIST autolearn=no version=3.2.5 X-Spam-Checker-Version: SpamAssassin 3.2.5 (2008-06-10) on fit.nokia.com X-OriginalArrivalTime: 25 Jan 2010 18:49:45.0833 (UTC) FILETIME=[29D94590:01CA9DEF] X-Nokia-AV: Clean X-Content-Filtered-By: Mailman/MimeDel 2.1.5 Cc: "pyunyh@gmail.com" , Jason Chambers , "stable@freebsd.org" , "jfvogel@gmail.com" Subject: Re: em interface slow down on 8.0R 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: Mon, 25 Jan 2010 18:49:49 -0000 --Apple-Mail-16-522846224 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=us-ascii Hi, On 2010-1-25, at 19:38, Nick Rogers wrote: >> On Mon, Jan 25, 2010 at 10:22 AM, Pyun YongHyeon = wrote: >> I'm not sure you're seeing a checksum offload bug of em(4) but the >> bug is easily reproducible in VLAN environments. If the issue is >> gone when you disable TX checksum offloading, see kern/141843 for >> for more detailed information as well as fix. >>=20 > Good to know, but I am having a similar problem on another em(4) = interface that has no VLAN interfaces.=20 FYI, I also have these issues without using VLANs, and turning off TSO = fixed them. Lars= --Apple-Mail-16-522846224--