Date: Fri, 23 Jul 1999 10:11:42 -0500 (CDT) From: Jeremy McMillan <aphor@ripco.com> To: mcmillan@cboe.com Cc: freebsd-scsi@FreeBSD.ORG, freebsd-stable@FreeBSD.ORG Subject: Re: Postmark results with DPT RAID-5 Message-ID: <Pine.SV4.3.91.990723100950.7689E-100000@golden.ripco.com> In-Reply-To: <14232.30911.431405.352467@trooper.velocet.ca>
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On Fri, 23 Jul 1999, David Gilbert wrote: > >>>>> "Yusuf" == Yusuf Goolamabbas <yusufg@outblaze.com> 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 <aphor@ripco.com> | Finger for PGP To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
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