From owner-freebsd-net Sun Dec 22 12:13: 7 2002 Delivered-To: freebsd-net@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 0D8AF37B401 for ; Sun, 22 Dec 2002 12:13:06 -0800 (PST) Received: from goof.com (pcp02305702pcs.longhl01.md.comcast.net [68.52.164.8]) by mx1.FreeBSD.org (Postfix) with SMTP id B21B143EDA for ; Sun, 22 Dec 2002 12:13:04 -0800 (PST) (envelope-from mmead@goof.com) Received: (qmail 21214 invoked by uid 10000); 22 Dec 2002 20:12:59 -0000 Date: Sun, 22 Dec 2002 15:12:59 -0500 From: "matthew c. mead" To: Robert Watson Cc: freebsd-net@freebsd.org, dillon@freebsd.org Subject: Re: TCP interactions (was: Re: Linux and FreeBSD poor network performance) Message-ID: <20021222151259.A21189@goof.com> References: <20021221165745.A67089@goof.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline User-Agent: Mutt/1.2.5i In-Reply-To: ; from rwatson@freebsd.org on Sun, Dec 22, 2002 at 10:59:52AM -0500 Sender: owner-freebsd-net@FreeBSD.ORG Precedence: bulk List-ID: List-Archive: (Web Archive) List-Help: (List Instructions) List-Subscribe: List-Unsubscribe: X-Loop: FreeBSD.org On Sun, Dec 22, 2002 at 10:59:52AM -0500, Robert Watson wrote: > On Sat, 21 Dec 2002, matthew c. mead wrote: > > I have a Linux box and FreeBSD box sitting on a 100Mbit ethernet segment > > that cannot seem to talk to one another faster than 150K/s. I've been > > using scp, ftp, http, to test this. > And you've done tests in both directions, or just in one? Both. > Could you try using a non-TCP performance measurement tool of some sort? > I.e., some sort of UDP throughput test. Because of your comment about the > two boxes talking to windows fine, it sounds likely to be a TCP > interaction, but it would be useful to check and see. I didn't get around to it before I started looking at hardware/driver. I dropped a 3c905 into the Linux box and things improved. I grabbed a new ethernet card elsewhere today and it works just fine. > I've CC'd Matt Dillon because he's fixed a number of subtle TCP bugs of > this sort in the past and can probably provide some debugging guidance. I think it's the Linux driver. Sorry for the false alert. This would be a fun one to figure out if it were tcp stack interactions. :( -matt -- matthew c. mead http://www.goof.com/~mmead/ To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-net" in the body of the message