From owner-freebsd-performance@FreeBSD.ORG Mon Jun 2 09:00:06 2003 Return-Path: Delivered-To: freebsd-performance@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id 049E237B401 for ; Mon, 2 Jun 2003 09:00:06 -0700 (PDT) Received: from puffin.mail.pas.earthlink.net (puffin.mail.pas.earthlink.net [207.217.120.139]) by mx1.FreeBSD.org (Postfix) with ESMTP id 7CA3143F75 for ; Mon, 2 Jun 2003 09:00:03 -0700 (PDT) (envelope-from tlambert2@mindspring.com) Received: from user-38ldshk.dialup.mindspring.com ([209.86.242.52] helo=mindspring.com) by puffin.mail.pas.earthlink.net with asmtp (SSLv3:RC4-MD5:128) (Exim 3.33 #1) id 19Mrj6-0003Yy-00; Mon, 02 Jun 2003 09:00:00 -0700 Message-ID: <3EDB7425.95472506@mindspring.com> Date: Mon, 02 Jun 2003 08:58:29 -0700 From: Terry Lambert X-Mailer: Mozilla 4.79 [en] (Win98; U) X-Accept-Language: en MIME-Version: 1.0 To: damir@voljatel.si References: <200306021623.17927.damir@voljatel.si> Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit X-ELNK-Trace: b1a02af9316fbb217a47c185c03b154d40683398e744b8a491185bfa2acea75165bfa6dfb747899f666fa475841a1c7a350badd9bab72f9c350badd9bab72f9c cc: freebsd-performance@freebsd.org Subject: Re: copy 150G over 100Mbit X-BeenThere: freebsd-performance@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Performance/tuning List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 02 Jun 2003 16:00:06 -0000 Damir Horvat wrote: > I need to copy ~150Gbytes over switched 100Mbit network to new machine (in max > 7-8 hours). The best you can expect is ((150 * 8 / 100) * 1024) / 60 = ~3.4 hours. That assumes that your transfer rate off/on the disks on each end can keep up with 100Mbit... which they can't. > I've tryed rsync and cp over NFS. Both came down roughly to 2Gig's per hour, > which is unacceptable. The only option left (as I see it) is to try with > cross-over cable. Your disk I/O will be your limiting factor, not your network speed. -- Terry