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From: p554mve@mpirbn.mpifr-bonn.mpg.de (Michael van Elst)
Newsgroups: comp.sys.amiga.hardware
Subject: Re: Hard disk transfer rates
Message-ID: <1245@mpirbn.mpifr-bonn.mpg.de>
Date: 24 Sep 90 10:29:27 GMT
References: <1938@lpami.wimsey.bc.ca> <2253@impch.imp.com> <2434@bambam.UUCP> <24541@uflorida.cis.ufl.EDU>
Reply-To: p554mve@mpirbn.UUCP (Michael van Elst)
Organization: Max-Planck-Institut fuer Radioastronomie, Bonn
Lines: 17

In article <24541@uflorida.cis.ufl.EDU> jma@beach.cis.ufl.edu (John 'Vlad' Adams) writes:
>Here's an interesting speed result for you demons out there.
>When I run Devspeed on my 2091/Quantum 40, I get reads in
>the 800-830k range, while my writes are in the 400-450k range.
>Talk about a big difference.  The same program on a GVP/Segate
>combination gets read/writes in the 650k range.  Oh, the
>450k writes are on a freshly formatted partition as well.

That's because of the read-ahead cache of the drive. As the name
says it won't work with writes.

Regards,
-- 
Michael van Elst
UUCP:     universe!local-cluster!milky-way!sol!earth!uunet!unido!mpirbn!p554mve
Internet: p554mve@mpirbn.mpifr-bonn.mpg.de
                                "A potential Snark may lurk in every tree."