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From: keithe@tekgvs.LABS.TEK.COM (Keith Ericson)
Newsgroups: comp.unix.i386
Subject: Re: Mylex SCSI Controller, 16550A UARTS
Message-ID: <6075@tekgvs.LABS.TEK.COM>
Date: 5 Oct 89 22:24:04 GMT
References: <111016@nstar.UUCP> <707@fiver.UUCP> <2834NU013809@NDSUVM1> <22709@cup.portal.com> <765@crdos1.crd.ge.COM>
Reply-To: keithe@tekgvs.LABS.TEK.COM (Keith Ericson)
Organization: Tektronix, Inc., Beaverton,  OR.
Lines: 25

In article <765@crdos1.crd.ge.COM> davidsen@crdos1.UUCP (bill davidsen) writes:
>
>B) I measured the ballpark i/o of several machines by doing a dd of the
>raw device to /dev/null. Crude, but it shows about 600kb for my ESDI
>system, the same for my RLL system, about 500kb for a microvax 3500
>(Ultrix) and about 700 for a Convex C220.

Bill -

	Have you tried dd'ing _to_ the drive to see what it's write
rate is?  We've found there to be an AMAZING (ly disappointing)
difference betwixt read & rite rates!

kEITHe

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