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From: dan@digi-g.UUCP (Dan Messinger)
Newsgroups: net.unix
Subject: Re: RatFor on the IBM PC/AT
Message-ID: <444@digi-g.UUCP>
Date: Fri, 4-Jan-85 09:30:55 EST
Article-I.D.: digi-g.444
Posted: Fri Jan  4 09:30:55 1985
Date-Received: Mon, 7-Jan-85 03:29:45 EST
References: <6821@brl-tgr.ARPA> <269@ur-laser.uucp>
Reply-To: dan@digi-g.UUCP (dan)
Organization: Digigraphic Systems Corp., Mpls, MN
Lines: 14
Summary: 

>>I've a question of my own about Unix/Xenix on the AT.  Benchmarks have 
>>shown only a 2-3 times speed advantage of the AT over the PC.  If you use 
>>a multi-user OS, doesn't the overhead pretty much eat up that advantage, 
>>giving you in effect only PC capability?

Off hand, this may seem obviously true, but in practice, (when MS-DOS is the
single user system), I have discovered the opposite.   I haven't tried any
benchmarks on the AT, but I did do some on a PC running DOS and Venix.  I
was quite surprised to discover the Venix gave me better overall performance
than MS-DOS did.  The difference was not significant in value, just in
direction.  The most significant difference was in system request performance.

Dan Messinger
ihnp4!umn-cs!digi-g!dan