Tops compatibility with A/UX

Kent Sandvik ksand at Apple.COM
Wed Feb 27 13:10:19 AEST 1991


In article <18243 at slice.ooc.uva.nl> morgan at 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 at apple.com, AppleLink: KSAND  DISCLAIMER: Private mumbo-jumbo
Zippy++ says: "C++ was given to mankind, so that we might learn patience"



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