Path: utzoo!utgpu!news-server.csri.toronto.edu!mailrus!tut.cis.ohio-state.edu!cs.utexas.edu!usc!apple!marc
From: marc@Apple.COM (Mark Dawson)
Newsgroups: comp.sys.mac.system
Subject: Re: RAM Cache
Keywords: best size
Message-ID: <41628@apple.Apple.COM>
Date: 5 Jun 90 14:56:04 GMT
References: <732@usage.csd.unsw.oz.au> <41579@apple.Apple.COM>
Organization: Apple Computer Inc, Cupertino, CA
Lines: 27

In article <41579@apple.Apple.COM> vossron@Apple.COM (Ronald N. Voss) writes:
>pem@usage.csd.unsw.oz.au (Peter E. Middleton) writes:
>
>>        I am curious to know what is the best size for the RAM cache.
>>	I realise that the amount of RAM makes a difference, but assuming
>>adequate RAM how do things like the number of volumes, their types,
>>the number of open files (is this applicable?) etc affect the
>>best choice? Is there a point at which cache managment overhead
>>exceeds any gains?
>
To give you an example, to compile, link, and Res (via MPW 3.1) my MacApp 
program (on a IIfx), it took 2 HOURS with RAM cache OFF and 20 MINUTES with
a 1 or 1.5 meg RAM cache.  Note that increasing the cache 512K from 1meg 
didn't improve the speed any (I'm still investegating what the speed cutoff
is).

Mark



-- 
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Mark Dawson                Service Diagnostic Engineering
AppleLink: Dawson.M

Apple says what it says; I say what I say.  We're different
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