No, I don't think the problem has anything to do with ActiveState nor their version of Perl. Though I don't see any reports using ActivePerl other than on Win32 (yes, they make such), I doubt that the problem would appear there.

My guess based on the results is that the blame can likely be placed on the malloc() of Win32's CRTL and that cygwin-built Perls doesn't use that version of malloc().

In any case, testing with my non-ActiveState Perl on Win32 gives: 

C:\> perl checkpairs.pl
Section A took 0.7500 CPU seconds
Section B took 2.5470 CPU seconds
Section A took 0.7340 CPU seconds
Section B took 13.8280 CPU seconds

[download]

Which certainly disproves that it "only occurs in ActivePerl". (:

And I've certainly seen Win32's malloc() cause performance problems. I haven't read the code for it recently but I'm quite familiar with some of the memory use patterns that it produces and those clearly show a very naive algorithm.

Anyone got a Win32 (non-cygwin) Perl built with profiling?

- tye        

In reply to Re^2: Garbage collection problem?? (Win32 CRTL malloc) by tye
in thread Garbage collection problem?? by tcarmeli

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