*BSD News Article 27614


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From: mycroft@duality.gnu.ai.mit.edu (Charles Hannum)
Newsgroups: comp.os.386bsd.development
Subject: Re: Notes on the *new* FreeBSD V1.1 VM system
Date: 20 Feb 1994 15:25:34 GMT
Organization: MIT Artificial Intelligence Lab
Lines: 25
Message-ID: <MYCROFT.94Feb20102534@duality.gnu.ai.mit.edu>
References: <BcxpGux.dysonj@delphi.com>
NNTP-Posting-Host: duality.gnu.ai.mit.edu
In-reply-to: John Dyson's message of Sat, 19 Feb 94 20:14:17 -0500


In article <BcxpGux.dysonj@delphi.com> John Dyson <dysonj@delphi.com>
writes:

   As you might know, the version of the MACH VM system that is being
   used by some of the BSD variants is not really complete and has
   some problems.

And before anyone is confused, I'll add that *many* of the points John
mentions have been addressed in NetBSD already.  Except for the
behavior when paging space runs out (which is a subject of debate;
several Mach-based systems simply panic, while others algorithmically
choose processes to kill), there are no reported instabilities in the
NetBSD VM system.

Also note that I am not saying, and have never said, that we are not
going to continue working on it.  There are many other improvements to
be made, even outside of clustering.  However, we do intend to wait
for 4.4Lite for some of it.

--
- Charles Hannum
  NetBSD group
  Working ports: i386, hp300, amiga, sparc, mac68k, pc532.
  In progress: pmax, sun3.