From owner-freebsd-scsi Tue Apr 14 14:13:58 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id OAA15724 for freebsd-scsi-outgoing; Tue, 14 Apr 1998 14:13:58 -0700 (PDT) (envelope-from owner-freebsd-scsi@FreeBSD.ORG) Received: from klemm.gtn.com (klemm-isdn.gtn.com [194.77.2.34]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id VAA15673 for ; Tue, 14 Apr 1998 21:13:36 GMT (envelope-from andreas@klemm.gtn.com) Received: (from andreas@localhost) by klemm.gtn.com (8.8.8/8.8.8) id XAA06313; Tue, 14 Apr 1998 23:12:37 +0200 (CEST) (envelope-from andreas) Message-ID: <19980414231237.30098@klemm.gtn.com> Date: Tue, 14 Apr 1998 23:12:37 +0200 From: Andreas Klemm To: bh@epigram.com, freebsd-scsi@FreeBSD.ORG Subject: Re: RAID performance/benchmarking References: <3533BBE4.DF09519@epigram.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.89.1i In-Reply-To: <3533BBE4.DF09519@epigram.com>; from Brandon Huey on Tue, Apr 14, 1998 at 12:41:24PM -0700 X-Disclaimer: A free society is one where it is safe to be unpopular X-Operating-System: FreeBSD 3.0-CURRENT SMP Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Tue, Apr 14, 1998 at 12:41:24PM -0700, Brandon Huey wrote: > For a pci ultrawide controller, are these figures suspect? What kind of > write performance hit should one expect w/RAID-5 ? external raid array, 5 x 4 GB HD, 233 MHz PII, AHA 2940 U Bonnie benchmark values FreeBSD 2.2.6 FreeBSD klemm2.hightek.com 2.2.6-STABLE FreeBSD 2.2.6-STABLE #0: Thu Apr 2 19:30:20 CEST 1998 root@klemm2.hightek.com:/usr/src/sys/compile/KLEMM2 i386 Filesystem 1K-blocks Used Avail Capacity Mounted on /dev/sd1c 17245898 2 15866225 0% /data -------Sequential Output-------- ---Sequential Input-- --Random-- -Per Char- --Block--- -Rewrite-- -Per Char- --Block--- --Seeks--- Machine MB K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU K/sec %CPU /sec %CPU FreeBSD A) sync 300 12480 94.1 13527 26.1 8734 24.9 11958 95.5 24792 45.0 101.8 2.2 B) async 300 12402 93.1 13556 25.8 8899 25.0 11707 92.5 24905 44.2 103.7 2.2 SCO Unix 300 2995 84.3 5512 36.2 3020 23.8 3578 97.5 11605 59.1 43.9 4.4 -- Andreas Klemm http://www.FreeBSD.ORG/~andreas What gives you 90% more speed, for example in kernel compilation ? http://www.FreeBSD.ORG/~fsmp/SMP/akgraph-a/graph1.html powered by ,,symmetric multiprocessor FreeBSD'' To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message