From owner-freebsd-stable Fri Jul 23 8:13: 8 1999 Delivered-To: freebsd-stable@freebsd.org Received: from relay.ripco.com (relay.ripco.com [209.100.227.3]) by hub.freebsd.org (Postfix) with SMTP id 88FA315033 for ; Fri, 23 Jul 1999 08:13:02 -0700 (PDT) (envelope-from aphor@ripco.com) Received: (qmail 25543 invoked from network); 23 Jul 1999 15:11:43 -0000 Received: from golden.ripco.com (aphor@209.100.227.10) by relay.ripco.com with SMTP; 23 Jul 1999 15:11:43 -0000 Date: Fri, 23 Jul 1999 10:11:42 -0500 (CDT) From: Jeremy McMillan To: mcmillan@cboe.com Cc: freebsd-scsi@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: Postmark results with DPT RAID-5 In-Reply-To: <14232.30911.431405.352467@trooper.velocet.ca> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Fri, 23 Jul 1999, David Gilbert wrote: > >>>>> "Yusuf" == Yusuf Goolamabbas writes: > > Yusuf> Hi, I am trying to stress test a DPT RAID controller DPT > Yusuf> SmartRaid Ultra PM3334UW (Is there any standard mechanism or a > Yusuf> methodology available for this). Any way, I am using the > Yusuf> benchmark tool "Postmark" written by Network Appliance which is > Yusuf> available via the URL > Yusuf> http://www.netapp.com/technology/level3/3022.html. > > I configured a DPT-3334UW on a K6-II/400 machine with 4 9G SCSI > drives. I found that for creating and deleting files, it couldn't be > beat (Ports would untar 4 times faster, for instance). However, I > found that a single 9G on a 2940UW would easily beat the raw > throughput. I was dissapointed with this. Why is this so? How's your DPT cache configured? --- Jeremy McMillan | Finger for PGP To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message