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From: jmb@patton.sgi.com (Jim Barton)
Newsgroups: comp.sys.mips
Subject: Re: vmstat
Message-ID: <42752@sgi.sgi.com>
Date: 10 Oct 89 15:07:36 GMT
References: <854@uakari.primate.wisc.edu> <29174@servitude.mips.COM>
Sender: jmb@patton.sgi.com
Organization: Silicon Graphics, Inc., Mountain View, CA
Lines: 25

In article <29174@servitude.mips.COM>, rogerk@mips.COM (Roger B.A. Klorese) writes:
> In article <854@uakari.primate.wisc.edu> bin@primate.wisc.edu (Brain in Neutral) writes:
...

>                                                             ...  Our new
> VM system is sufficiently closer to BSD's as to make the task somewhat
> simpler, but it's still not identical, and we don't want to make a half
> attempt at it.
...
> ROGER B.A. KLORESE      MIPS Computer Systems, Inc.      phone: +1 408 720-2939
> {ames,decwrl,pyramid}!mips!rogerk


Interesting.  Sun, AT&T, SGI, etc., are all moving away from BSD-like VM
systems to single-level store based systems with region/segment management
(SunOS 4.0, System V.4, IRIX 3.3).  The Mach VM system is a research system
with region management as well, although single-level store isn't
quite there yet.

This seems like a big step backwards in terms of VM management.  Can this
really be true?

-- Jim Barton
Silicon Graphics Computer Systems    "UNIX: Live Free Or Die!"
jmb@sgi.sgi.com, sgi!jmb@decwrl.dec.com, ...{decwrl,sun}!sgi!jmb