Date: Fri, 11 Aug 1995 15:50:40 -0400 (EDT) From: "Jonathan M. Bresler" <jmb@kryten.Atinc.COM> To: "Rodney W. Grimes" <rgrimes@gndrsh.aac.dev.com> Cc: msmith@atrad.adelaide.edu.au, john@zyqad.co.uk, freebsd-hardware@freebsd.org Subject: Re: Upgrade to my machine Message-ID: <Pine.3.89.9508111506.I6515-0100000@kryten.atinc.com> In-Reply-To: <199508111942.MAA04834@gndrsh.aac.dev.com>
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On Fri, 11 Aug 1995, Rodney W. Grimes wrote: > > > XX. BAS DEC3053L Dec/Quantum 535MB 3.5"x1", SCSI-II, 5400 RPM, 9.5mS $ 195.00 > > > > rod, this is a great drive and i am very satisfied with mine ;) > > it is also a loud drive. when i hit swap on it, i know immediately. the > > seek motor must be a monster! ;) > > Getting that last .5mS cost a bit in noise. You should be in a room with > 10 of those laying out on benches running make worlds on a pile of machines, > now that is LOUD. ;))) > > IOZONE: auto-test mode > > Pretty typical numbers, but the numbers I use are always for a > freshly newfs disk using the outer tracks (ie, maximal conditions). > > Your numbers are considerably lower than my 2.4/4.4MB/sec rating > for the DSP3053L due to file system fragmentation and the fact your > probably running at about the 250MB mark in on the disk (guessed from > your numbers :-)). at that point the disk had been in constant use for some 5 months, must have had 300mb on it at the time > > bonnie: > > > > /* dont jive with the iozone number very well, do they ? comments ? */ > > Was this under identical conditions? identical is a pretty strong condition.....the fujitsu drive was new at the time so fragmentation was minimal. at this time, several weeks of use it still reports the same bonnie numbers. > > disklabels: NOTE: any misconfiguration here is my fault > > any recommenations are appreciated > > Actually, any miss configuration on the DSP3053L is _MY_ fault. That > is my standard label, I recognize it! two points! > > type: SCSI > > disk: sd1s1 > > This one you can take the blame for, but it is reasonable. ;) had a place to take clues from. > > /* sysinstall put all these partitions off cylinder boundaries.....hmmm */ > > You don't have to worry about cyl boundaries inside the BSD slice. excellent....but ths slice must be on cyl boundaries ?? Jonathan M. Bresler jmb@kryten.atinc.com | Analysis & Technology, Inc. FreeBSD Postmaster jmb@FreeBSD.Org | 2341 Jeff Davis Hwy play go. | Arlington, VA 22202 ride bike. hack FreeBSD.--ah the good life | 703-418-2800 x346
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