[Chicken-hackers] GC and heap growth percentage question

[Peter Bex]

Hello hackers,

Could someone explain to me the purpose of C_heap_growth?  If I run the
finalizer-error-test with -:hg using a higher value than 200 (ie, 250),
it doesn't crash with an out of memory error.  Poking and prodding in
gdb leads me to the (careful) conclusion that a too low heap growth
percentage is what's causing the finalizer-error-test to fail.

My current theory is that Felix's patch at
http://lists.nongnu.org/archive/html/chicken-hackers/2012-06/msg00077.html
causes GCs to happen in more rapid succession, so the heap size growth
between two GC would be limited by the number of finalizers.

I wanted to test this theory by applying the patch and modifying the
finalizer test, but for some reason I get an "out of memory - heap
full while resizing" panic even if I *don't* change anything!

The tests I wanted to try involved changing the size of the vectors
or only setting finalizers when (modulo i X) is 0, for some value of X.

Cheers,
Peter
-- 
http://sjamaan.ath.cx
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