Solved

OS8 Memory Problems

Posted on 1998-08-17
4
275 Views
Last Modified: 2012-05-11
I'm running OS8 on a Mac6500/250MHz with 48megs of RAM - lately the system is going from using roughly 15 megs of RAM to anywhere up to 24megs or so (it keeps getting worse!) - sometimes after opening several aps (all have their memory levels set so as to be able to run simultaneously), and sometimes before i open any app.  I've tried playing with the cache size, to no avail.  I know more RAM would help, but I can't afford it right now, and don't know if the system would eat that up, too!  It's really making life difficult . . . I'd rather not go back to OS7.5 . . . Help, please!
0
Comment
Question by:nogoddess
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
  • 2
4 Comments
 
LVL 6

Accepted Solution

by:
TheHub earned 100 total points
ID: 1536091
Go to the Memory Control Panel.
Turn on Virtual Memory. Set the size of VM to a number greater than your physical RAM that is divisible by 32 (64, 96, 128, etc.)
Set the cache size to 1536 (48 * 32 = 1536).

Now you are ready for the hard part. All applications use RAM in a contiguous fashion. If you launch and quit and launch and quit apps, the RAM will become fragmented and the larger applications will not be able to fit into the available spaces. example:
the finder uses 2 megs
netscape uses 8 megs
photoshop uses 20 megs
eudora uses 4 megs
quark uses 10megs
=44megs leaving 4 megs free

You quit netscape and reclaim 8 megs, but the app you want to use wants 12 megs, but it won't fit between the finder and photoshop (8meg hole) and it won't fit after quark (4meg hole) even though the free RAM = 12megs.

The system heap was designed to be growable. As the system needs more space, it takes it. If you train yourself to launch the applications that you are least likely to quit first, you will not lose so much RAM to the system. When the RAM gets fragmented and you forget the order in which you launched them, you need to quit all applications and start over. Virtual Memory will also speed things up a bit and your applications will not need use as much RAM on MacOS 8.1. this is exactly opposite of Systems prior to MacOS 8.x.

-good luck
0
 

Author Comment

by:nogoddess
ID: 1536092
Uh . . . maybe I'm being a complete idiot now, but I'm not finding any virtual memory settings for OS8 in the control panels - the memory control only allows you to set the cache size and the RAM disk
0
 
LVL 6

Expert Comment

by:TheHub
ID: 1536093
Does your control panel look similar to this:
http://www.jemz.com/cust/nogoddess/vm.gif

Find the cursor. Everything in the area is VM related.
0
 

Author Comment

by:nogoddess
ID: 1536094
Hey - Nope, it doesn't look like that, used to in OS7.5, but not in OS8 - it looks like this now:
http://www.mojono.com/mem.html

0

Featured Post

Flexible connectivity for any environment

The KE6900 series can extend and deploy computers with high definition displays across multiple stations in a variety of applications that suit any environment. Expand computer use to stations across multiple rooms with dynamic access.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Mac Password changed - need to know options. 3 80
Mac keep giving me java error 13 65
exchange support of mac 2 78
Sierra iCloud Drive storing data locally 3 27
In this article we will discuss some EI Capitan Mail app issues and provide some manual process to resolve them.
Set up iPhone and iPad email signatures to always send in high-quality HTML with this step-by step guide.
Although Jacob Bernoulli (1654-1705) has been credited as the creator of "Binomial Distribution Table", Gottfried Leibniz (1646-1716) did his dissertation on the subject in 1666; Leibniz you may recall is the co-inventor of "Calculus" and beat Isaac…

749 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question