From owner-freebsd-net@FreeBSD.ORG Sun Sep 28 19:51:12 2008 Return-Path: Delivered-To: net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id 3784E106568E for ; Sun, 28 Sep 2008 19:51:12 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from QMTA06.emeryville.ca.mail.comcast.net (qmta06.emeryville.ca.mail.comcast.net [76.96.30.56]) by mx1.freebsd.org (Postfix) with ESMTP id 1AE918FC0A for ; Sun, 28 Sep 2008 19:51:12 +0000 (UTC) (envelope-from jdc@koitsu.dyndns.org) Received: from OMTA04.emeryville.ca.mail.comcast.net ([76.96.30.35]) by QMTA06.emeryville.ca.mail.comcast.net with comcast id LDgK1a0030lTkoCA6KbC0F; Sun, 28 Sep 2008 19:35:12 +0000 Received: from koitsu.dyndns.org ([67.180.253.227]) by OMTA04.emeryville.ca.mail.comcast.net with comcast id LKbB1a0074v8bD78QKbBSk; Sun, 28 Sep 2008 19:35:12 +0000 X-Authority-Analysis: v=1.0 c=1 a=g3XWG8PL9CAA:10 a=qSlgtixbqsUA:10 a=QycZ5dHgAAAA:8 a=nNU62_RgrPhi-SKxFK4A:9 a=Op30DxwxTIN7Sr_AjyOAHlqssIMA:4 a=EoioJ0NPDVgA:10 a=MSl-tDqOz04A:10 a=LY0hPdMaydYA:10 Received: by icarus.home.lan (Postfix, from userid 1000) id 3DF02C9437; Sun, 28 Sep 2008 12:35:11 -0700 (PDT) Date: Sun, 28 Sep 2008 12:35:11 -0700 From: Jeremy Chadwick To: "firmdog@gmail.com" Message-ID: <20080928193511.GB87069@icarus.home.lan> References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.18 (2008-05-17) Cc: stable@freebsd.org, net@freebsd.org Subject: Re: 7.1-PRERELEASE : bad network performance (nfe0) 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: Sun, 28 Sep 2008 19:51:12 -0000 On Sun, Sep 28, 2008 at 01:43:12PM -0400, firmdog@gmail.com wrote: > I have the same problem on a Dell Poweredge SC440 when I transferred over > 50GB > from a FreeBSD 5.4 box to my new Dell running 7.1. Used a crossover cable > and > the link was 1000 full duplex, but could only get about 10M/s. Very odd. > Did a tcpdump and saw lots of bad checksum errors. This is probably because checksum offloading was being done on the NIC. -- | Jeremy Chadwick jdc at parodius.com | | Parodius Networking http://www.parodius.com/ | | UNIX Systems Administrator Mountain View, CA, USA | | Making life hard for others since 1977. PGP: 4BD6C0CB |