*BSD News Article 28060


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From: mycroft@duality.gnu.ai.mit.edu (Charles Hannum)
Newsgroups: comp.os.386bsd.questions
Subject: Re: NetBSD slower (@ to 3 times) with >16megs
Date: 06 Mar 1994 19:27:06 GMT
Organization: MIT Artificial Intelligence Lab
Lines: 19
Distribution: world
Message-ID: <MYCROFT.94Mar6142706@duality.gnu.ai.mit.edu>
References: <2l4ghj$s5l@homea.ensta.fr>
NNTP-Posting-Host: duality.gnu.ai.mit.edu
In-reply-to: rougeau@bsd7.ensta.fr's message of 3 Mar 1994 11:09:39 GMT


In article <2l4ghj$s5l@homea.ensta.fr> rougeau@bsd7.ensta.fr (Patrick
Rougeau) writes:

   I am experiencing a strange behavior of NetBSD0.9 and current
   while running some benchmark programms when I use 32 megs of Memory
   instead of 16 , i am getting the same result or 2 to 3 times the
   initial time(unconsistently)

Some motherboards appear to not cache memory above 16MB.  You should
consult your documentation and/or call your vendor to find out if
there's any way to convince it to; regardless, it's a hardware problem
and not a software problem.

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