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From: peter@sugar.UUCP (Peter da Silva)
Newsgroups: comp.sys.amiga
Subject: Re: Mac Multitasking? Hee-hee!
Message-ID: <532@sugar.UUCP>
Date: Sat, 22-Aug-87 17:04:37 EDT
Article-I.D.: sugar.532
Posted: Sat Aug 22 17:04:37 1987
Date-Received: Mon, 24-Aug-87 03:43:54 EDT
References: <6565@eddie.MIT.EDU> <2742@hoptoad.uucp> <3638@cit-vax.Caltech.Edu> <256@uwslh.UUCP>
Organization: Sugar Land UNIX - Houston, TX
Lines: 16
Summary: UNIX time slice.

The UNIX time slice is usually 1/60 of a second (or 1/50 of a second in Europe)
for the same reason the Amiga has a 200 line display (and a somewhat larger
display in Europe). This is not universal, but it is common.

Secondly: VM is always an improvement over swapping, for a given working set
and physical memory. The "problem with VM" is that people tend to see it as
an infinite memory source and load too much into it. It ain't, and you can't.

Thirdly, I do not believe swapping will appear on the Amiga, as Amiga programs
are position dependent once loaded. It could be implemented on the Mac. For
the Amiga the solution is an MMU... I hope you all remembered where to put
MEMF_PUBLIC in your AllocMems, and where to leave it out. Forgetting
MEMF_PUBLIC with an MMU will make forgetting MEMF_CHIP when you wanted chip
memory positively benign by comparison.
-- 
-- Peter da Silva `-_-' ...!seismo!soma!uhnix1!sugar!peter (I said, NO PHOTOS!)