[comp.unix.aux] MultiFinder Virtual Memory Size under A/UX 2.0

demarsee@gamera.cns.syr.edu (Darryl E. Marsee) (05/08/90)

I'm running A/UX 2.0b9, and want to set up the virtual memory capability 
when running under MultiFinder.  However, I can't remember which file it is
I have to edit, and what to add to it, to get this to work.  Can anyone
refresh my memory?  Also, how big can I make this?  I know that with an 8Mb-
real machine I can run with 16Mb virtual memory.  How about with a 4Mb-real 
machine?  Can I still set it up as a 16Mb virtual machine, or do I have 
some lower limit?

Many Thanks & Regards,

Darryl E. Marsee
Syracuse University
<demarsee@gamera.cns.syr.edu>

davism@creatures.cs.vt.edu (Mat Davis) (05/09/90)

In article <3223@rodan.acs.syr.edu> demarsee@gamera.cns.syr.edu (Darryl E. Marsee) writes:
>I'm running A/UX 2.0b9, and want to set up the virtual memory capability 
>when running under MultiFinder.  However, I can't remember which file it is
>I have to edit, and what to add to it, to get this to work.  Can anyone
>refresh my memory?  Also, how big can I make this?  I know that with an 8Mb-
>real machine I can run with 16Mb virtual memory.  How about with a 4Mb-real 
>machine?  Can I still set it up as a 16Mb virtual machine, or do I have 
>some lower limit?
>

I modified the files /mac/bin/mac24 and /mac/bin/mac32 to add '$*' on the
'startmac' command.  That way, I can type 'mac32 -m5m' to start a 5M Mac 
environment, or just 'mac32' to use the default size (the size of physical
RAM).

So far as I've been told, 16M is the largest Mac environment that you can run,
but I'd expect that you could run that on a 4M machine with a 16M swap 
partition (so that you 20M virtual memory; 2-3M for the kernel, 16M for the
Mac OS, and some to spare).  It would probably swap enough to be very slow,
but it should work.

	Mat

tony@playfair.stanford.edu (Tony Cooper) (05/10/90)

Just set the environmental variable TBMEMORY to as many bytes as you want
up to 16Mb. Do it before running mac32 (eg put it in your .login) and
you will get that much Finder memory. Eg
setenv TBMEMORY 16000000
will give you nearly 16Mb. It makes the Virtual INIT redundant (someone
said that Virtual does not work under 2.0).