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From: gary@dgcad.SV.DG.COM (Gary Bridgewater)
Newsgroups: comp.arch
Subject: Re: Memory utilization & inter-process
Message-ID: <1072@svx.SV.DG.COM>
Date: 27 Aug 89 08:27:18 GMT
References: <3332@blake.acs.washington.edu> <261500008@S34.Prime.COM>
Reply-To: gary@svx.SV.DG.COM ()
Organization: Data General SDD, Sunnyvale, CA
Lines: 21


 In article <261500008@S34.Prime.COM> BEAR@S34.Prime.COM writes:
 >... Unfortunately, I can't think of an available OS that uses a WS
 >scheduler off the top of my head (that doesn't mean they don't exist!). Good
 >luck.

How about DG's AOS/VS. No luck required. Quite available.
Another poster points out that VMS has one also. All to available :->.

I'm moderately surprised that Unix doesn't have such a thing. It does have the
concept of limiting other things. In its simplest form it can be accomplished
by setting a maximum working set size on the process. When the process needs
another page and there is no free one and it has its limit - page it against
itself using whatever method is popular at the moment.
Note: don't drag out that tired old 'memory is cheap and getting cheaper so
just go real' cliche.  Data requirements can outstrip memory pricing without
even breathing hard.
One job at a time?  Grow up.
-- 
Gary Bridgewater, Data General Corp., Sunnyvale Ca.
gary@sv4.ceo.sv.dg.com or 
{amdahl,aeras,amdcad,mas1,matra3}!dgcad.SV.DG.COM!gary
No good deed goes unpunished.