Path: utzoo!attcan!uunet!world!decwrl!ucbvax!husc6!encore!zelig!jdarcy From: jdarcy@encore.com (Jeff d'Arcy) Newsgroups: comp.sys.encore Subject: Re: Umax 4.3 virtual memory problem Keywords: Umax, paging, cow, bug Message-ID: Date: 18 Sep 90 23:24:41 GMT References: <1479@sirius.ucs.adelaide.edu.au> <1990Sep18.210722.206@cunixf.cc.columbia.edu> Sender: news@Encore.COM Lines: 23 alan@cunixf.cc.columbia.edu (Alan Crosswell) writes: >some things need to get fixed -- even if it means >scrapping the 4.3 kernel and dropping Mach in instead. After all, not >much point in supporting two kernels that both provide a 4.3 system >call interface. OK, Devil's Advocate time. You say that there's not much point in supporting two kernels that both provide a 4.3 system call interface, and I agree. Now. . .why not just go with Mach? I'm sure I don't need to explain the advantages of Mach over 4.3, although the one you mention (better VM implementation) is probably very relevant to this discussion. >Hopefully OSF/1 will >become a product soon.... Of course Encore Mach is now. As far as I know - and my information may be incomplete since I'm in a different group - Encore Mach is not a commercially supported product but is rather considered an ongoing research project. -- Jeff d'Arcy, Generic Software Engineer - jdarcy@encore.com Nothing was ever achieved by accepting reality