From owner-freebsd-scsi Fri Jul 23 17:31: 6 1999 Delivered-To: freebsd-scsi@freebsd.org Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (Postfix) with ESMTP id 8473314F01; Fri, 23 Jul 1999 17:30:50 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id JAA06652; Sat, 24 Jul 1999 09:59:32 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id JAA42234; Sat, 24 Jul 1999 09:59:30 +0930 (CST) Date: Sat, 24 Jul 1999 09:59:30 +0930 From: Greg Lehey To: Yusuf Goolamabbas Cc: freebsd-scsi@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: Postmark results with DPT RAID-5 Message-ID: <19990724095930.H84734@freebie.lemis.com> References: <19990723060603.30708.qmail@yusufg.portal2.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <19990723060603.30708.qmail@yusufg.portal2.com>; from Yusuf Goolamabbas on Fri, Jul 23, 1999 at 06:06:03AM -0000 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-scsi@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org On Friday, 23 July 1999 at 6:06:03 -0000, Yusuf Goolamabbas wrote: > Hi, I am trying to stress test a DPT RAID controller DPT SmartRaid > Ultra PM3334UW (Is there any standard mechanism or a methodology > available for this). Any way, I am using the benchmark tool "Postmark" > written by Network Appliance which is available via the URL > http://www.netapp.com/technology/level3/3022.html. I've had a look at this benchmark. I don't understand why they want to do things this way. Many factors influence overall system throughput; if you want to measure only one part of it, measuring "real-life" performance is confusing. If you want to measure just the storage device throughput, look at rawio (ftp://ftp.lemis.com/pub/rawio.tar.gz). If you do use it, I'd be very interested in your results. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-scsi" in the body of the message