From owner-freebsd-hackers Mon Aug 31 04:30:54 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id EAA05008 for freebsd-hackers-outgoing; Mon, 31 Aug 1998 04:30:54 -0700 (PDT) (envelope-from owner-freebsd-hackers@FreeBSD.ORG) Received: from david.siemens.de (david.siemens.de [192.35.17.14]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id EAA04996 for ; Mon, 31 Aug 1998 04:30:51 -0700 (PDT) (envelope-from andre.albsmeier@mchp.siemens.de) X-Envelope-Sender-Is: andre.albsmeier@mchp.siemens.de (at relayer david.siemens.de) Received: from mail.siemens.de (salomon.siemens.de [139.23.33.13]) by david.siemens.de (8.9.1/8.9.1) with ESMTP id NAA00798 for ; Mon, 31 Aug 1998 13:29:47 +0200 (MET DST) Received: from curry.mchp.siemens.de (daemon@curry.mchp.siemens.de [146.180.31.23]) by mail.siemens.de (8.9.1/8.9.1) with ESMTP id NAA14923 for ; Mon, 31 Aug 1998 13:29:47 +0200 (MET DST) Received: (from daemon@localhost) by curry.mchp.siemens.de (8.8.8/8.8.8) id NAA05786 for ; Mon, 31 Aug 1998 13:29:44 +0200 (CEST) From: Andre Albsmeier Message-Id: <199808311129.NAA02414@internal> Subject: Re: TCP performance. In-Reply-To: <199808311016.DAA24028@hub.freebsd.org> from Darren Reed at "Aug 31, 98 08:15:23 pm" To: avalon@coombs.anu.edu.au (Darren Reed) Date: Mon, 31 Aug 1998 13:29:39 +0200 (CEST) Cc: hackers@FreeBSD.ORG X-Mailer: ELM [version 2.4ME+ PL40 (25)] MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: owner-freebsd-hackers@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG > > Well, FreeBSD TCP performance sucks or it does some things which can > make it suck badly. > > >From simple observations (hub leds, ftp's meter), ftp'ing from a laptop > (3c589d) running 2.2.6 to SunOS4 (LX) is considerably worse than in the > other direction. Although I do suspect the 3c589d (or its driver - zp ?) I get about 1MB in both directions on 10Base2 and about 9MB on a 100BaseTx. I am using Intel Etherexpress cards so I assume that it only can be the driver for your card or the card or your hardware. > do not handle ethernet collisions at all in a good way to be a possible > cause. I've never known ethernet ftp performance so bad as with the > equipment just mentioned. I have never seen better TCP performance than by using FreeBSD. So it really might be something depending on your hardware. I will have to setup a FreeBSD laptop with a 3c589 (:-() in about three weeks so maybe then I will have more infos. > > Darren -Andre To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message