From owner-freebsd-net@FreeBSD.ORG Fri Oct 31 08:27:58 2003 Return-Path: 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 C6D1416A4CE for ; Fri, 31 Oct 2003 08:27:58 -0800 (PST) Received: from bilver.wjv.com (user38.net339.fl.sprint-hsd.net [65.40.24.38]) by mx1.FreeBSD.org (Postfix) with ESMTP id 2D5C743FAF for ; Fri, 31 Oct 2003 08:27:57 -0800 (PST) (envelope-from bv@bilver.wjv.com) Received: from bilver.wjv.com (localhost.wjv.com [127.0.0.1]) by bilver.wjv.com (8.12.10/8.12.9) with ESMTP id h9VGRsm2049291 for ; Fri, 31 Oct 2003 11:27:54 -0500 (EST) (envelope-from bv@bilver.wjv.com) Received: (from bv@localhost) by bilver.wjv.com (8.12.10/8.12.9/Submit) id h9VGRsxs049290 for freebsd-net@freebsd.org; Fri, 31 Oct 2003 11:27:54 -0500 (EST) (envelope-from bv) Date: Fri, 31 Oct 2003 11:27:54 -0500 From: Bill Vermillion To: freebsd-net@freebsd.org Message-ID: <20031031162754.GH46420@wjv.com> References: <20031031060117.GA77018@weenix.guru.org> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20031031060117.GA77018@weenix.guru.org> Organization: W.J.Vermillion / Orlando - Winter Park ReplyTo: bv@wjv.com User-Agent: Mutt/1.5.4i X-Spam-Status: No, hits=0.0 required=5.0 tests=none autolearn=no version=2.60 X-Spam-Checker-Version: SpamAssassin 2.60 (1.212-2003-09-23-exp) on bilver.wjv.com Subject: Re: iMac and FreeBSD performance problems X-BeenThere: freebsd-net@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list Reply-To: bv@wjv.com List-Id: Networking and TCP/IP with FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 31 Oct 2003 16:27:59 -0000 Even though on Fri, Oct 31, 2003 at 01:01 Keith Mitchell realized that everything he says should be taken cum grano salis, he unhesitatingly continued with this missive: > I'm trying to figure out why my FreeBSD box and my iMac are having > trouble communicating at 100 Mbs full-duplex. > To briefly describe my LAN setup, I have a 16port linksys > 10/100 ethernet switch connected to two FreeBSD systems, an > iMac, a PC and some other miscellaneous stuff. Everything works > fine except the interaction between the iMac and the FreeBSD > machines. > What I see is extremely slow transfers (FTP/TFTP at least) from > the FreeBSD machines to the iMac. The reverse direction (from > the iMac to the FreeBSD machiens work fine). If this isn't bad > enough, if I connect the iMac to a 10BT hub instead of the > ethernet switch then everything seems to work fine as well. > The iMac can talk to all the other equipment without a problem > when its connected to the ethernet switch. Likewise the FreeBSD > machines can talk to each other without any problems and to all > of the other networking equipment.... they just can't talk to > the iMac efficiently. I've seen this as a client has 2 G4s and an xrack in our rack space. All machines go through a Cisco 2948, that goes through a bride on an Etinc BWManager, to a 7120, then to the facility gigabit switch. Transfers between any of the Apple machines are blazingly fast. >From the FBSD machines in the rack to anywhere else speed is fast. But between the BSD and the Apples speed drops to the 10KB ranage at times. >From the outside world the transfers from the BSD machines are limited only by connectivity and I got 6Mb/sec transfers from some SW at AT&T to the local machines recently - as we are on a Level 3 backbone and it's fast. I've also heard via a 3rd party that a person we are associated with at Omneon Video Technologies [omneon.com] that they had the problem there. They reportedly got a patch from Apple on this, but this appears to be something which is not distributed. Last week I was at an SACD listening party given by an engineer friend of mine and they were all engineers, musicians, producers, etc., and all used Macs and ProTools. A well known CD mastering engineer asked me if I knew why is Mac to XP transfers were so slow. So this a problem - not widespread - and not occuring everywhere. It's just some machines at some times. Just throwing this out as it appears not be isolated but not a big enough problem that Apple addressed in a general patch/fix - IF what I was told that what Omneon experienced is true. > Anyone have any clues on this bizarre problem? No. But I'm going to see if I can trace down what I have heard, that may only be rumors. Bill -- Bill Vermillion - bv @ wjv . com