Date: Thu, 13 Dec 2001 18:51:53 +0100 From: Thomas Zenker <thz@Lennartz-electronic.de> To: Matthew Dillon <dillon@apollo.backplane.com> Cc: stable@freebsd.org Subject: Re: TCP stack still hosed? Message-ID: <20011213185153.A365@mezcal.tue.le> In-Reply-To: <200112131102.fBDB2WQ66827@apollo.backplane.com>; from dillon@apollo.backplane.com on Thu, Dec 13, 2001 at 03:02:32AM -0800 References: <20011213105451.A738@mezcal.tue.le> <200112131102.fBDB2WQ66827@apollo.backplane.com>
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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 > <dillon@backplane.com> 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
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