[Neil Schemenauer]
> That's the dirty culprit. :-) With the GC disabled:
>> justpush 0.81
> justzip 0.75
>> Perhaps we should raise the default threshold.
A fixed threshold of any size will leave us vulnerable to quadratic-time
cases. Proportional growth wouldn't, though. For example, if a round of gc
didn't find anything to collect, or found very little, we could boost the
threshold by 25% (that's a right shift by 2 and an add <wink>). Contrarily,
when gc finds lots of stuff to collect, reduce the threshold. This adjusts
itself to a program's runtime characteristics. I suspect most long-running
programs enjoy vast stretches of time over which the second derivative of
their gc behavior is relatively constant <wink>.
