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Article #13496

Expanding your system heap

#13496
From: Howard C. Simonson
Date: Tue, 11 Nov 1986 22:53
21 lines
1863 bytes
Thought I'd make a quick request to the net about the proper way to go
about expanding the system heap.  Is there a tech note that addresses
this?  I have most of them (compressed and ready for download) so a
pointer would be nice.  I have heard in the past that there is more
to it than just editing the field in the boot blocks.

Of course the question arises, why do you want to change it?  Anyone
have an answer?  What indicators are there that its time to increase
the system heap?  I have a system file on the old DF-20 thats about
a megabyte, must be a good sized resource map being built.  I have
looked at the runtime allocation with the uriah heap DA.  Shows very
little free memory available.  There is a fair amount thats purgeable
though.  I figure with two meg, why be stingy on the heap and court
unnecessary bombs.  Any comments???
-- 
"What  it boils  down to is that  when                       Howard C. Simonson
you have a problem you want a solution."    ...{hplabs,ihnp4,nsc}!amdahl!howard
<MacMemory ad/Nov. Macworld> (very profound guys, now mug for the camera...)

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Technical Details
Message-ID: <4166@amdahl.UUCP>
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!amdahl!howard

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Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: arc1-ca.pugleaf.net!utzoo!mnetor!seismo!amdahl!howard
From: howard@amdahl.UUCP (Howard C. Simonson)
Newsgroups: comp.sys.mac
Subject: Expanding your system heap
Message-ID: <4166@amdahl.UUCP>
Date: Tue, 11-Nov-86 17:53:17 EST
Article-I.D.: amdahl.4166
Posted: Tue Nov 11 17:53:17 1986
Date-Received: Wed, 12-Nov-86 00:48:06 EST
Reply-To: howard@amdahl.UUCP (Howard C. Simonson)
Organization: Amdahl Corp, UTS Products Group
Lines: 21
Keywords: system heap technical notes uriah
Summary: Looking for the whole story on how to expand the heap