From owner-freebsd-questions@FreeBSD.ORG Wed Feb 8 20:50:51 2006 Return-Path: X-Original-To: questions@freebsd.org Delivered-To: freebsd-questions@FreeBSD.ORG Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 4090D16A420 for ; Wed, 8 Feb 2006 20:50:51 +0000 (GMT) (envelope-from software@schmittnet.com) Received: from host.idesigns.net (host.idesigns.net [209.239.38.159]) by mx1.FreeBSD.org (Postfix) with ESMTP id BB43443D45 for ; Wed, 8 Feb 2006 20:50:50 +0000 (GMT) (envelope-from software@schmittnet.com) Received: from [127.0.0.1] (seymour-cuda1-24-49-171-41.albyny.adelphia.net [24.49.171.41]) by host.idesigns.net (8.12.10/8.12.10) with ESMTP id k18KojIT009960; Wed, 8 Feb 2006 15:50:48 -0500 Message-ID: <43EA59E0.3050002@schmittnet.com> Date: Wed, 08 Feb 2006 15:51:44 -0500 From: "Bill Schmitt (SW)" User-Agent: Mozilla Thunderbird 1.0.7 (Windows/20050923) X-Accept-Language: en-us, en MIME-Version: 1.0 To: mark.jacobs@custserv.com References: <7867115D33789747BE4994F8700BB5862AB0F6@tmpmailmb02.enterprise.corpad.timeinc.com> In-Reply-To: <7867115D33789747BE4994F8700BB5862AB0F6@tmpmailmb02.enterprise.corpad.timeinc.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Cc: questions@freebsd.org Subject: Re: showdown transfering files with scp X-BeenThere: freebsd-questions@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 08 Feb 2006 20:50:51 -0000 mark.jacobs@custserv.com wrote: >I was using scp to copy several large (300-800mb) each files between two >Freebsd machines. Both are on the same hub, 100MB Ethernet connection. >The source box is FreeBSD 5.4 stable at a late October build date. The >target is running 6.0 stable at a current build date. > > > >The first three files showed a transfer rate of about 3mb/sec and >transfer took about a 5-7 minutes for each file. After the third one >however the transfer rate dropped to 100-200 KB/sec. There was nothing >else going on in the internal network at the time. > > > >Any ideas on what happened? > > > >Mark Jacobs > >_______________________________________________ >freebsd-questions@freebsd.org mailing list >http://lists.freebsd.org/mailman/listinfo/freebsd-questions >To unsubscribe, send any mail to "freebsd-questions-unsubscribe@freebsd.org" > > > > > I can't be sure if it's the issue, but at one point some individuals on the network where I worked installed hubs of their own (the non-intelligent variety of connection) and it didn't just slow them down, it dragged down the entire network segment. Since hubs are not intelligent, there are an awful lot of collisions and putting a hub downstream from the routers means that all bets are off on performance. Hope that helps.