Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP Posting-Version: version B 2.10.2 9/18/84; site peora.UUCP Path: utzoo!watmath!clyde!burl!ulysses!mhuxr!mhuxt!houxm!vax135!petsd!peora!jer From: jer@peora.UUCP (J. Eric Roskos) Newsgroups: net.arch Subject: Re: Page size and the meaning of life Message-ID: <1764@peora.UUCP> Date: Fri, 1-Nov-85 09:00:30 EST Article-I.D.: peora.1764 Posted: Fri Nov 1 09:00:30 1985 Date-Received: Sun, 3-Nov-85 05:02:09 EST References: <926@decwrl.UUCP> <931@lll-crg.ARpA> <146@opus.UUCP> <735@mmintl.UUCP> Organization: Perkin-Elmer SDC, Orlando, Fl. Lines: 18 >> Would anyone care to comment on why we need virtual memory at all >> with a 256 meg real memory being available in the near future? > > What leads either of you to believe that 256M will be enough to run your > programs? Memory used by programs expands to use the space available. Not only this, but the number of users also expands. One thing often overlooked, I think, is that with a paging system, assuming adequate locality of reference, you can have a large number of pages resident that are actively in use by a large number of users, instead of having great unused expanses of memory allocated to large programs at any one time, keeping other users out of memory. -- Shyy-Anzr: J. Eric Roskos UUCP: Ofc: ..!{decvax,ucbvax,ihnp4}!vax135!petsd!peora!jer Home: ..!{decvax,ucbvax,ihnp4}!vax135!petsd!peora!jerpc!jer US Mail: MS 795; Perkin-Elmer SDC; 2486 Sand Lake Road, Orlando, FL 32809-7642