Date: Thu, 08 Oct 1998 20:35:16 +0200 From: sthaug@nethelp.no To: winter@jurai.net Cc: freebsd-smp@FreeBSD.ORG Subject: Re: hw platform Q - what's a good smp choice these days? Message-ID: <5302.907871716@verdi.nethelp.no> In-Reply-To: Your message of "Thu, 8 Oct 1998 12:45:31 -0400 (EDT)" References: <Pine.BSF.4.02.9810081240490.16487-100000@sasami.jurai.net>
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> > 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. > > Umm... How is it surprising that a disk with a higher data density has > faster sustained transfer rate? Consider that the drive has nearly two > times as many bits per inch and travels at 75% of the speed of the other > drive. It's not surprising to me. It may be surprising to those who believe that SCSI is always faster. > Besides, your IBM is fairly new while the Seagate is at least 3 or 4 years > old. The Seagate was bought last fall. The Norwegian vendor couldn't deliver the 9 GB Barracuda LP then. So I don't think the comparison is all that unfair, actually. 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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