Path: utzoo!utgpu!news-server.csri.toronto.edu!bonnie.concordia.ca!thunder.mcrcim.mcgill.edu!snorkelwacker.mit.edu!apple!ksand
From: ksand@Apple.COM (Kent Sandvik)
Newsgroups: comp.unix.aux
Subject: Re: Tops compatibility with A/UX
Message-ID: <49660@apple.Apple.COM>
Date: 27 Feb 91 02:10:19 GMT
References: <18243@slice.ooc.uva.nl>
Organization: Apple Computer Inc., Cupertino, CA
Lines: 27

In article <18243@slice.ooc.uva.nl> morgan@ooc.uva.nl (Chris Morgan/RIKS) writes:

>Another point...my A/UX is running on a MacIIfx with 4MB of RAM. I have ordered
>another 4x4MB simms which I hope to see in about 2-3 weeks. Until then, is it
>possible to take advantage of the virtual memory capabilities of the IIfx, which
>I fully expect exist ???  Currntly the machine is pretty slow with a hell of a
>lot of disk activity. When I try to run MacX or X11...well its simply not
>practical even for a IIfx. Surely it must be possible to trick A/UX into
>thinking that theres more memory available than is physically installed.

Hmm, any UNIX workstation with 4Mb or less is doomed to be slow, unfortunately.
Especially running X Windows, which eats and chews memory.

I assume that your machine is busy paging and/or swapping. The virtual
memory is *always* turned on with A/UX - PMMU is a requirement for 
running A/UX in the first place. In the long run you should also look
into expanding the swap space - because virtual memory has to go somewhere...

Anyway, sorry can't give any more specific advice.

Kent


-- 
Kent Sandvik, Apple Computer Inc, Developer Technical Support
NET:ksand@apple.com, AppleLink: KSAND  DISCLAIMER: Private mumbo-jumbo
Zippy++ says: "C++ was given to mankind, so that we might learn patience"