From owner-freebsd-questions Sun Jan 16 14:30:30 2000 Delivered-To: freebsd-questions@freebsd.org Received: from sr14.nsw-remote.bigpond.net.au (sr14.nsw-remote.bigpond.net.au [24.192.3.29]) by hub.freebsd.org (Postfix) with ESMTP id 4715115183 for ; Sun, 16 Jan 2000 14:30:21 -0800 (PST) (envelope-from areilly@nsw.bigpond.net.au) Received: from areilly.bpc-users.org (CPE-24-192-49-170.nsw.bigpond.net.au [24.192.49.170]) by sr14.nsw-remote.bigpond.net.au (Pro-8.9.3/8.9.3) with SMTP id JAA17454 for ; Mon, 17 Jan 2000 09:30:16 +1100 (EDT) Received: (qmail 46865 invoked by uid 1000); 16 Jan 2000 22:30:15 -0000 From: "Andrew Reilly" Date: Mon, 17 Jan 2000 09:30:15 +1100 To: C J Michaels Cc: Andrew Reilly , FreeBSD Questions Subject: Re: (fast) ethernet performance problems/tweaking Message-ID: <20000117093015.B43406@gurney.reilly.home> References: <20000110075748.A29687@gurney.reilly.home> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 1.0pre2i In-Reply-To: Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sun, Jan 16, 2000 at 11:23:22AM -0500, C J Michaels wrote: > Well, all I can say is, do you have a switch or a hub? If you have a hub, > odds are that it doesn't support full-duplex in the 1st place and that's why > you are getting really poor performance. > > Try forcing the cards to half-duplex and see what happens. No hub (just crossover cable), but thanks for the pointer to potential problems when my network grows a bit bigger. The problem turned out to be NT botching the auto-sensing thing. I had FreeBSD wired to 100baseTX, full-duplex, but NT was set to "AUTO", and was presumably picking half-duplex. When I forced NT to match the mode that FreeBSD was in, everything was happy, for all of the supported modes. (Ob Windows bash: NT required a reboot every time I changed the ethernet config...) There is still a weird performance gotcha with NT's ftp process (it would pause for about one second in four, resulting in a net througput of about 1.2M bytes/s). Samba performance is better, at about 5M/s. Still not the 10M/s you'd hope for, but enough to keep me going at the moment. -- Andrew To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message