From owner-freebsd-hackers Tue Mar 25 07:24:20 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id HAA17942 for hackers-outgoing; Tue, 25 Mar 1997 07:24:20 -0800 (PST) Received: from labinfo.iet.unipi.it (labinfo.iet.unipi.it [131.114.9.5]) by freefall.freebsd.org (8.8.5/8.8.5) with SMTP id HAA17829 for ; Tue, 25 Mar 1997 07:22:05 -0800 (PST) Received: from localhost (luigi@localhost) by labinfo.iet.unipi.it (8.6.5/8.6.5) id PAA04749; Tue, 25 Mar 1997 15:25:15 +0100 From: Luigi Rizzo Message-Id: <199703251425.PAA04749@labinfo.iet.unipi.it> Subject: Re: Compaq Smart-2/P RAID controller results To: md@dcs.qmw.ac.uk (Mark Dawson) Date: Tue, 25 Mar 1997 15:25:15 +0100 (MET) Cc: freebsd-hackers@FreeBSD.org, programmers@dcs.qmw.ac.uk In-Reply-To: <199703251412.OAA08617@ruby.dcs.qmw.ac.uk> from "Mark Dawson" at Mar 25, 97 02:11:49 pm X-Mailer: ELM [version 2.4 PL23] Content-Type: text Sender: owner-hackers@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > Below is a comparison of the performance of the Compaq SMART-2/P > controller with: the older Compaq SMART controller (M RAID5); a CCD of > four legacy Wren-VII disks (I CCD); a logical disk of four older > fast-narrow 1GB disks (I RAID5); a striped configuration of the six > 4.3GB disks (H RAID0); and an internal 4.3GB wide scsi disk. > > BONNIE RESULTS-----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 > I CCD 300 1118 97.8 2031 13.1 1195 12.1 1126 97.8 3068 17.5 46.8 3.4 > M RAID5 100 3427 82.9 3356 23.3 2265 18.0 4168 90.1 5649 25.2 181.5 8.9 > I RAID5 300 1161 99.0 1691 13.6 1688 18.0 1157 98.8 6582 37.8 43.7 2.7 > H RAID5 300 5542 49.2 5328 11.9 4826 15.4 9222 86.9 16673 34.4 115.1 2.6 > H RAID0 300 11615 98.3 15231 36.9 9096 27.1 10532 98.0 16073 30.7 131.6 2.6 > H disk 300 3199 28.0 3277 6.5 1726 4.4 6666 61.0 6271 7.1 100.5 1.6 too bad the CCD configuration is not comparable at all with the RAID0/RAID5 configuration (actually, it is even slower than my single IDE disk!). Would you have a chance of running CCD on the same config as H RAID0 ? Luigi -----------------------------+-------------------------------------- Luigi Rizzo | Dip. di Ingegneria dell'Informazione email: luigi@iet.unipi.it | Universita' di Pisa tel: +39-50-568533 | via Diotisalvi 2, 56126 PISA (Italy) fax: +39-50-568522 | http://www.iet.unipi.it/~luigi/ _____________________________|______________________________________