From owner-freebsd-hackers Tue Mar 25 09:25:29 1997 Return-Path: Received: (from root@localhost) by freefall.freebsd.org (8.8.5/8.8.5) id JAA24743 for hackers-outgoing; Tue, 25 Mar 1997 09:25:29 -0800 (PST) Received: from mangle.dcs.qmw.ac.uk (mangle-qmw.dcs.qmw.ac.uk [138.37.95.250]) by freefall.freebsd.org (8.8.5/8.8.5) with ESMTP id JAA24737 for ; Tue, 25 Mar 1997 09:25:25 -0800 (PST) Received: from md@ruby [138.37.88.139]; by mangle.dcs.qmw.ac.uk (8.8.5/8.8.5/S-4.0) with ESMTP; id RAA15280; Tue, 25 Mar 1997 17:21:52 GMT Received: from md@localhost; by ruby.dcs.qmw.ac.uk (8.8.4/8.8.4/C-3.2); id RAA28806; Tue, 25 Mar 1997 17:21:46 GMT Received: from Messages.8.5.N.CUILIB.3.45.SNAP.NOT.LINKED.ruby.cs.qmw.ac.uk.sun4.41 via MS.5.6.ruby.cs.qmw.ac.uk.sun4_41; Tue, 25 Mar 1997 17:21:46 +0000 (GMT) Message-ID: Date: Tue, 25 Mar 1997 17:21:46 +0000 (GMT) From: Mark Dawson To: Luigi Rizzo Subject: Re: Compaq Smart-2/P RAID controller results CC: freebsd-hackers@FreeBSD.org, programmers@dcs.qmw.ac.uk In-Reply-To: <199703251425.PAA04749@labinfo.iet.unipi.it> References: <199703251425.PAA04749@labinfo.iet.unipi.it> Sender: owner-hackers@FreeBSD.org X-Loop: FreeBSD.org Precedence: bulk > 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 ? You're right, the Wren-VII disks aren't youthful so the comparison is not fair to the CCD driver. I've attached the H RAID0 disks to the ProLiant's integrated NCR 53c875 wide scsi controller and configured them as a 6 x 4.3GB CCD disk with the following 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 H CCD 300 8491 76.5 8474 19.1 5123 13.7 10273 96.6 12138 16.2 136.8 2.4 H RAID0 300 11615 98.3 15231 36.9 9096 27.1 10532 98.0 16073 30.7 131.6 2.6 Mark