Path: utzoo!attcan!uunet!snorkelwacker!tut.cis.ohio-state.edu!sppy00!glf
From: glf@sppy00.UUCP (HILL GREGORY L.)
Newsgroups: comp.sys.mac.system
Subject: SUM II and System Heap size fix?
Keywords: SUM II, System Heap, HELP.
Message-ID: <909@sppy00.UUCP>
Date: 31 Jul 90 12:50:27 GMT
Distribution: na
Organization: Online Computer Library Center, Dublin, Ohio.
Lines: 47

A few weeks ago, during all the talk about having a System Heap size big 
enough to have 25% free space in it, someone posted a way to increase the 
System Heap size by using SUM II TOOLS.

I decided to give it a try.  (Running MultiFinder) I opened the About
Finder dialog and saw ... (with the [ ] as the box, the ||| as the dark, 
                           filled in part and the :: as the empty 
                           [available] part)
Finder 6.1
System 6.0.3
Total Memory 2,560K      Largest Unused Block: 1,536K
Finder:  160K  [||||||:::]
System:  864K  [||||||||||||||||||||||||:]

Hmm, says I.  Doesn't look like 25% to me.  So, I open SUM TOOLS, Edit
Volume Boot Blocks, change System Heap size[512K] from about 168000 (I think
that's what it was) to 300000 (after several attempts), Write Boot Blocks, 
Quit and ReStart.

Now I look and About Finder and see ...

Total Memory 2,560K      Largest Unused Block: 1,533K
Finder:  160K [||||||:::]
System:  867K  [|||||||||||||||||||||||||]
                                        ^
WHAT?  System usage is up only 3K, *AND* now the box is more filled in
that before!

I'll admit to being a bit novice in all this.  Since System size is
showing 867K and Heap size is set to only 200K, does that mean that the system 
is pre-allocated the 200K and the other 667K are being allocated on the fly?
(And that's why there's never any space left over ... it's getting only as
much as it needs.) If that's so, does that mean that if I want 25% more than 
the 867K that I need to change Heap size to 1 MEG?!?

I've got a standard Mac Plus and have about 10 INITS ... very standard, stable 
stuff from little things like Safe Eject to ATM and Type Align.

Any help or info greatly appreciated.

Thanks,
   Greg
-- 
=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
Greg Feldman-Hill  {seismo|cbosgd}!osu-cis!sppy00!glf  -OR-  gfh@rsch.oclc.org
OCLC - Online Computer Library Center ...  Dublin, Ohio      
   "If one studies too zealously, one easily loses his pants."   A. Einstein