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From: weesh@grymoire.crd.ge.com (Darweesh)
Newsgroups: comp.sys.mac.programmer,comp.sys.mac.misc,comp.sys.mac.system
Subject: Re: System 7.0 vs Virtual 2.0
Message-ID: <11521@crdgw1.crd.ge.com>
Date: 31 Aug 90 16:24:48 GMT
References: <1990Aug30.211334.2689@cs.uoregon.edu>
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Followup-To: comp.sys.mac.programmer
Organization: General Electric Corporate R&D Center
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First, you must realize that Virtual memory of any sort can only be
accessed as fast as the media it's being stored on.  Theoretically,
you could have virtual memory using an audio cassette player, but I would never
use that considering that it may take a couple of years to swap a couple
of megs.  If you have a fast hard drive, virtual will swap faster, but unless
your hard drive is timed in tens of nanoseconds, then it will not be even close
to as fast as real RAM.
I have used Virtual 2.03 and System 7.0 virtual (yea system 7.0 is going to 
support virtual memory).  As I said before, the speed will be dependant on
your hard disk speed, but both seem to work well.  Usually, they just swap
when you are switching between applications in multifinder or when you start up
an application.  It also helps to have some extra real memory so you don't
have an excess of swapping.  I bought virtual because I have a MAc II and
needed the PMMU (connectix has a good deal if you buy the PMMU and the
software).  I have no idea if I answered your question(s)...

-Mike Darweesh
weesh@crd.ge.com