From owner-freebsd-net@FreeBSD.ORG Sun Nov 6 12:02:06 2011 Return-Path: Delivered-To: freebsd-net@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id C7F47106568E for ; Sun, 6 Nov 2011 12:02:06 +0000 (UTC) (envelope-from bevan@bi-co.net) Received: from tomahna.bi-co.net (tomahna.bi-co.net [178.77.99.158]) by mx1.freebsd.org (Postfix) with ESMTP id 1E4DC8FC2C for ; Sun, 6 Nov 2011 12:02:05 +0000 (UTC) Received: (qmail 14066 invoked from network); 6 Nov 2011 13:02:04 +0100 Received: from ip-109-91-30-235.unitymediagroup.de (HELO ?192.168.178.21?) (109.91.30.235) by tomahna.bi-co.net with (DHE-RSA-AES256-SHA encrypted) SMTP; 6 Nov 2011 13:02:04 +0100 Message-ID: <1320580923.19667.65.camel@bevan-pc.fritz.box> From: Michael =?ISO-8859-1?Q?La=DF?= To: Rick Macklem Date: Sun, 06 Nov 2011 13:02:03 +0100 In-Reply-To: <1893638131.1215459.1320505430915.JavaMail.root@erie.cs.uoguelph.ca> References: <1893638131.1215459.1320505430915.JavaMail.root@erie.cs.uoguelph.ca> Content-Type: text/plain; charset="UTF-8" X-Mailer: Evolution 3.2.1 Content-Transfer-Encoding: 7bit Mime-Version: 1.0 Cc: freebsd-net@freebsd.org, Adrian Chadd Subject: Re: Gigabit Ethernet performance with Realtek 8111E X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list Reply-To: bevan@bi-co.net List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 06 Nov 2011 12:02:06 -0000 Hi! Am Samstag, den 05.11.2011, 11:03 -0400 schrieb Rick Macklem: > try typing: > # sysctl dev.re.0.stats=1 > - this will dump out the stats on the chip > if the "Rx missed frames" count is non-zero, you're probably snookered, > to put it technically:-) > - That's what I get for a re chip is this laptop and I haven't found > a way around it. I just live with flakey net performance. Rx missed frames is >0 indeed. Every time I see those drops in speed the number of missed frames increases by approx. 20-50. When searching for this problem I found your old thread on freebsd-current[1]. It seems that the problem is way less severe here. Some transfers even don't cause any problems. Others however spend more time at 0kbit/s than actually transferring data... It also seems like transfers are stabilizing after some seconds but that is not always the case. In good times the rate of missed frames is below 0.01%. I think the Dup ACKs are just a result of these lost packages. I do not see them always when these problems occur. Was there any progress after your last mail on 8th of Nov.? Greetings, Michael [1]: http://lists.freebsd.org/pipermail/freebsd-current/2010-October/020793.html http://lists.freebsd.org/pipermail/freebsd-current/2010-November/020797.html