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Article #33108Re: When will MacOS get virtual memory?
From: Kevin Hammond CMP
Date: Tue, 11 Oct 1988 20:06
Date: Tue, 11 Oct 1988 20:06
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Having had some experience of working with VM operating systems, I'm not sure that they really are that wonderful. Demand Paging perhaps, to avoid writing overlays (you have something a bit like this on the Mac with the segment loader, I suppose), but VM? The problem is that if you really need more memory than you've got, you will always thrash (we have this problem with our Sun workstations, it makes them very slow), and if you don't you don't really have a problem. Buying more memory (or writing more efficient programs) usually seems the better option if you have the choice. Paging from a floppy or slow hard disk isn't my idea of fun either. -- Wot? No Signature? UUCP: ...!mcvax!ukc!uea-sys!kh JANET: kh@sys.uea.ac.uk
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Path: arc1-ca.pugleaf.net!utzoo!utgpu!water!watmath!clyde!att!osu-cis!tut.cis.ohio-state.edu!mailrus!ames!amdcad!sun!pitstop!sundc!seismo!uunet!mcvax!ukc!s1!kh From: kh@s1.sys.uea.ac.uk (Kevin Hammond CMP) Newsgroups: comp.sys.mac Subject: Re: When will MacOS get virtual memory? Summary: Is VM really the answer? Message-ID: <157@s1.sys.uea.ac.uk> Date: 11 Oct 88 20:06:55 GMT References: <1526@oakhill.UUCP> <551@dms.UUCP> <8253@cit-vax.Caltech.Edu> <5721@zodiac.UUCP> Organization: UEA, Norwich, UK Lines: 13