From owner-freebsd-stable Thu Dec 13 9:52:39 2001 Delivered-To: freebsd-stable@freebsd.org Received: from smtp.www-service.de (smtp.www-service.de [212.77.161.16]) by hub.freebsd.org (Postfix) with SMTP id A7F2837B405 for ; Thu, 13 Dec 2001 09:52:36 -0800 (PST) Received: (qmail 25072 invoked from network); 13 Dec 2001 17:52:23 -0000 Received: from pd90065d6.dip.t-dialin.net (HELO fw.tue.le) (217.0.101.214) by smtp.www-service.de with SMTP; 13 Dec 2001 17:52:23 -0000 Received: from mezcal.tue.le (mezcal.tue.le [192.168.201.20]) by fw.tue.le (8.8.8/8.8.8) with ESMTP id SAA13231; Thu, 13 Dec 2001 18:51:53 +0100 (CET) (envelope-from thz@mezcal.tue.le) Received: (from thz@localhost) by mezcal.tue.le (8.11.6/8.11.6) id fBDHprF00457; Thu, 13 Dec 2001 18:51:53 +0100 (CET) (envelope-from thz) Date: Thu, 13 Dec 2001 18:51:53 +0100 From: Thomas Zenker To: Matthew Dillon Cc: stable@freebsd.org Subject: Re: TCP stack still hosed? Message-ID: <20011213185153.A365@mezcal.tue.le> Mail-Followup-To: Thomas Zenker , Matthew Dillon , stable@freebsd.org References: <20011213105451.A738@mezcal.tue.le> <200112131102.fBDB2WQ66827@apollo.backplane.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: <200112131102.fBDB2WQ66827@apollo.backplane.com>; from dillon@apollo.backplane.com on Thu, Dec 13, 2001 at 03:02:32AM -0800 Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.ORG On Thu, Dec 13, 2001 at 03:02:32AM -0800, Matthew Dillon wrote: > If you do, we need tcpdumps of the test connection. Also, I recommend > testing between two hosts with normal ethernet cards in them > (i.e. not USB) as a double-check. > > -Matt > Matthew Dillon > the most impacting change is in tcp_usrreq.c ---------------------------- revision 1.51.2.10 date: 2001/11/30 19:54:05; author: alfred; state: Exp; lines: +3 -3 MFC: 1.64 (larger default tcp send/recieve buffers) ---------------------------- It seems that the switch and/or the USB/ethernet adaptor is overrun by the larger sendspace. So setting sysctl net.inet.tcp.xxxspace=16384 on the USB/ethernet system solves the problem mostly. Thomas -- Thomas Zenker c/o Lennartz electronic GmbH Bismarckstrasse 136, D-72072 Tuebingen, Germany Phone: +49-(0)7071-93550 Email: thz@lennartz-electronic.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message