From owner-freebsd-hackers Fri Nov 7 17:04:56 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id RAA06058 for hackers-outgoing; Fri, 7 Nov 1997 17:04:56 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from rah.star-gate.com (rah.star-gate.com [204.188.121.18]) by hub.freebsd.org (8.8.7/8.8.7) with ESMTP id RAA06052 for ; Fri, 7 Nov 1997 17:04:52 -0800 (PST) (envelope-from hasty@rah.star-gate.com) Received: from rah.star-gate.com (localhost.v-site.net [127.0.0.1]) by rah.star-gate.com (8.8.7/8.8.5) with ESMTP id RAA00593 for ; Fri, 7 Nov 1997 17:04:51 -0800 (PST) Message-Id: <199711080104.RAA00593@rah.star-gate.com> X-Mailer: exmh version 2.0gamma 1/27/96 To: hackers@FreeBSD.ORG Subject: Seagate Cheetah performance... Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Date: Fri, 07 Nov 1997 17:04:50 -0800 From: Amancio Hasty Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk Any tweaking that I do to improve the performance of my : type 0 fixed SCSI 2 iozone 48 IOZONE: Performance Test of Sequential File I/O -- V2.01 (10/21/94) By Bill Norcott Operating System: FreeBSD 2.x -- using fsync() Send comments to: b_norcott@xway.com IOZONE writes a 48 Megabyte sequential file consisting of 98304 records which are each 512 bytes in length. It then reads the file. It prints the bytes-per-second rate at which the computer can read and write files. Writing the 48 Megabyte file, 'iozone.tmp'...9.289062 seconds Reading the file...6.429688 seconds IOZONE performance measurements: 5418377 bytes/second for writing the file 7828008 bytes/second for reading the file My Ultra DMA IDE disk generates about 8MB/sec for writing . Tnks, Amancio