Date: Tue, 14 Apr 1998 23:12:37 +0200 From: Andreas Klemm <andreas@klemm.gtn.com> To: bh@epigram.com, freebsd-scsi@FreeBSD.ORG Subject: Re: RAID performance/benchmarking Message-ID: <19980414231237.30098@klemm.gtn.com> In-Reply-To: <3533BBE4.DF09519@epigram.com>; from Brandon Huey on Tue, Apr 14, 1998 at 12:41:24PM -0700 References: <3533BBE4.DF09519@epigram.com>
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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''
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