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From: scotts@gaudi.CSUFresno.EDU (Scott Slater)
Newsgroups: comp.sys.mac.system
Subject: Re: Setting System Heap
Message-ID: <1990May3.012140.10133@gaudi.CSUFresno.EDU>
Date: 3 May 90 01:21:40 GMT
References: <1990May1.231447.29824@agate.berkeley.edu>
Reply-To: scotts@gaudi.CSUFresno.EDU (Scott Slater)
Organization: California State University, Fresno
Lines: 28

In article <1990May1.231447.29824@agate.berkeley.edu> steve@violet.berkeley.edu (Steve Goldfield) writes:
>A letter in the June MacWorld suggests that some crashes
>may be caused by the system nearly filling the assigned
>system heap. The writer suggested that by increasing the
>size of his heap, he no longer experienced crashes.  He used an
>application called HeapFixer which came with QuicKeys.
>
>Two questions:
>1. Is this true? My heap looks like it is
>nearly 90 to 95% full. The writer says it shouldn't be more
>than 80% full.
>2. Is there another way to change the size
>of the heap? I'm not planning to buy QuicKeys
>any time soon?
>
>Thanks in advance,

Well to answer question #1:   Yes, it is true.  I have used HeapFixer on my
system (IIcx 6.0.4) and it works great.  The documentation says that you 
should have at least 30% free space in the system heap.

To answer question #2:  I have no of no other way to change the size of the
system heap other than using HeapFixer.  But I don't look for programs that
do this, so I'm sure there probably are.

Hope this helps!

Scott