From owner-freebsd-current Sun Apr 2 23:14:38 1995 Return-Path: current-owner Received: (from majordom@localhost) by freefall.cdrom.com (8.6.10/8.6.6) id XAA26029 for current-outgoing; Sun, 2 Apr 1995 23:14:38 -0700 Received: from aries.ibms.sinica.edu.tw ([140.109.40.248]) by freefall.cdrom.com (8.6.10/8.6.6) with ESMTP id XAA26018 for ; Sun, 2 Apr 1995 23:14:31 -0700 Received: (from taob@localhost) by aries.ibms.sinica.edu.tw (8.6.11/8.6.9) id OAA24053; Mon, 3 Apr 1995 14:14:37 +0800 Date: Mon, 3 Apr 1995 14:14:36 +0800 (CST) From: Brian Tao cc: freebsd-current@FreeBSD.org Subject: Re: New installation notes In-Reply-To: <199504022218.PAA02612@gndrsh.aac.dev.com> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: current-owner@FreeBSD.org Precedence: bulk On Sun, 2 Apr 1995, Rodney W. Grimes wrote: > > There is a very big difference between a Quantum Maverick 540 (3600 RPM, > 14mS, 128k cache) and an Empire 1080 (5400RPM, 9.5mS, 512k cache). The > two sets of numbers your reported above are very close to the maximum > the drives can do. I only looked up the drive specs this morning, after having thought Quantum made only 5400 and 7200 drives. That was pretty much the only explanation I could think of (RPM). But I were to do something like two 'dd if=blah of=/dev/null bs=65536' on files from each drive simultaneously, I should still be able to hit close to the maximum throughput, no? -- Brian ("Though this be madness, yet there is method in't") Tao taob@gate.sinica.edu.tw <-- work ........ play --> taob@io.org