Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Posting-Version: version B 2.10.2 9/18/84; site oberon.UUCP
Path: utzoo!linus!philabs!prls!amdimage!amdcad!decwrl!decvax!tektronix!hplabs!sdcrdcf!oberon!blarson
From: blarson@oberon.UUCP (Bob Larson)
Newsgroups: net.arch
Subject: Re: Cache revisited
Message-ID: <100@oberon.UUCP>
Date: Wed, 14-Aug-85 12:12:27 EDT
Article-I.D.: oberon.100
Posted: Wed Aug 14 12:12:27 1985
Date-Received: Tue, 20-Aug-85 01:47:29 EDT
References: <5374@fortune.UUCP> <901@loral.UUCP> <2583@sun.uucp> <5459@fortune.UUCP>
Reply-To: blarson@Usc-Ecl.Arpa (Bob Larson)
Distribution: net
Organization: U. of So. Calif., Los Angeles
Lines: 17
Keywords: Cashe
Summary: Salespeople exagerate

In article <5459@fortune.UUCP> wall@fortune.UUCP (Jim wall) writes:
>    The numbers that are claimed for the hit rates on caches are 
>nothing short of incredible. I think the CPU manufacturers are the
>instigators, and nobody bothers to question them. 
>
I know of one computer manufacturer that has one set of numbers for
cashe hit rate given out by the salespeople and another by the
technical people.  (95% vs 98%)  The manuals list the higher figure.

They also just got around to revising all the manuals to say that a word
is 32 bits rather than 16.  Since the basic addressing unit of the machine
is 16 bits, this makes talking about the machine akward.  (The basic 
addressing unit of a VAX is 8 bits.)

Bob Larson
Arpa: Blarson@Usc-Ecl.Arpa
Uucp: {ihnp4,hplabs,...}!sdcrdcf!uscvax!oberon!blarson