Date: Wed, 14 Feb 1996 15:23:52 -0700 (MST) From: Terry Lambert <terry@lambert.org> To: T0682740@pmail.tepco.co.jp Cc: terry@lambert.org, hackers@FreeBSD.org Subject: Re: VM question Message-ID: <199602142223.PAA00837@phaeton.artisoft.com> In-Reply-To: <3121D613.C680.001@pmail.tepco.co.jp> from "T0682740@pmail.tepco.co.jp" at Feb 14, 96 09:31:15 pm
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> > The Usenix papers are generally available for anonymouse FTP, both by > > the authors home site, and from the Usenix SAGE group ftp site. The > > SAGE FTP site is: ftp://ftp/sage.usenix.org/ > > Unfortunately they don't hold the latest papers. Only up to 1994 or > so. You'll have to subscribe to the proceedings, or get a copy from somone who does (or hit up the authors, but it's hard to get that information without the rest of it...). > > FreeBSD does not have a mach VM system any more. The MACH VM system > > does not operate (implicitly) on a unified buffer cache scheme. Cache > > unification is an important win. > > Is there any paper about unified buffer cache scheme? Talk to John Dyson and David Greenman. They should write and present a paper, IMO. > > You could implement an external demand pager on the basis of trapping > > the SIGSEGV signal, and implementing mapping of resources as a result; > > you would robably be better off providing a kernel interface, however, > > since you would have to coalesce domains to keep the number of entries > > small enough to avoid problems. > > Actually, I'd like to implement a sort of DSM that provides > page-in/out over the network transparently to the user process. I believe this exists and is in ports already -- or in experimental. One of the interesting apps is cluster computing (search for "David Sarnoff" or slight varioations on the web -- that's the name of the research center). The Willows software does user mode paging; it's available with agreement to their license (see www.willows.com). Terry Lambert terry@lambert.org --- Any opinions in this posting are my own and not those of my present or previous employers.
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