Date: Thu, 08 Oct 1998 08:14:57 +0200 From: sthaug@nethelp.no To: tlambert@primenet.com Cc: petrilli@amber.org, freebsd-smp@FreeBSD.ORG Subject: Re: hw platform Q - what's a good smp choice these days? Message-ID: <28895.907827297@verdi.nethelp.no> In-Reply-To: Your message of "Wed, 7 Oct 1998 20:13:51 %2B0000 (GMT)" References: <199810072013.NAA14751@usr08.primenet.com>
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> > > > Its all very well, but SCSI disks are a LOT more expensive than IDE > > > > ones. > > No, they aren't. Well, it depends on what you mean by "a lot". Here on Norway, SCSI disks are 50% - 100% more expensive than IDE of the same rotational speed and capacity. This difference is large enough to be significant. > That's burst rate. For sustained rate, concurrency is an issue; see > abbove for "tagged command queueing". For sustained rate (sequential read, one process), I can read data faster off an IBM 16 GB 5400 RPM drive than a 9 GB 7200 RPM Barracuda (this is not the LP model). This is of course just one data point, but I've seen the same in a number of other comparisons using sequential reads. Steinar Haug, Nethelp consulting, sthaug@nethelp.no To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message
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