Date: Tue, 25 Mar 1997 17:21:46 +0000 (GMT) From: Mark Dawson <md@dcs.qmw.ac.uk> To: Luigi Rizzo <luigi@labinfo.iet.unipi.it> Cc: freebsd-hackers@FreeBSD.org, programmers@dcs.qmw.ac.uk Subject: Re: Compaq Smart-2/P RAID controller results Message-ID: <YnC0aeO_9JY15SEdJU@dcs.qmw.ac.uk> In-Reply-To: <199703251425.PAA04749@labinfo.iet.unipi.it> References: <199703251425.PAA04749@labinfo.iet.unipi.it>
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> 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
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