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From: erik@kroete2.freinet.de (Erik Corry)
Subject: Re: Garbage collection cost (was Re: Parenthesized syntax challenge)
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References: <44aa9a$j5h@miso.cs.uq.edu.au> <LUDEMANN.95Oct6140930@expernet26.expernet.com> <DGApp8.J41@undergrad.math.uwaterloo.ca> <MAD.95Oct13123618@tanzanite.math.keio.ac.jp> <45ksdk$7gr@jive.cs.utexas.edu> <DGJp8o.7nF@Cadence.COM> <MAD.95Oct18040436@tanzanite.math.keio.ac.jp> <hbaker-1710952127200001@10.0.2.15> <46jb8v$sm8@news.parc.xerox.com> <hbaker-2510951016220001@10.0.2.15>
Date: Thu, 26 Oct 1995 13:40:23 GMT
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Xref: glinda.oz.cs.cmu.edu comp.lang.dylan:5643 comp.lang.lisp:19738 comp.lang.java:2873

Henry Baker (hbaker@netcom.com) wrote:

: I would advise using .-relative addressing for all pointers (perhaps some
: C compiler vendor/GNU is listening), and start using VM compression.  Once you
: have encoded pointers as _relative_ addresses instead of _absolute_
: addresses, then VM compression will work better.

Could you explain how using .-relative addressing improves compression?
The way I understood it VM compression (a la Mac RamDoubler) only works
really well if the pages to be compressed consist mostly of zeros.

--
[SCSI] ist ja bekanntlich so kompliziert, dass es nur die fuer ihre Bastelwut
beruechtigten Apple-User benutzen. -- Detlef Grell, c't 8/95
--
Erik Corry ehcorry@inet.uni-c.dk
