As LanX might have guessed, I maintain a list of nodes related to memory issues: Re: Perl Memory problem ... (Memory Tools)
From that node, I suggest you start by mulling over each item in
the "General Areas to consider when faced with a Memory Leak" section ...
while thinking like a detective. :)
The Profiling Memory Usage talk by Perl legend Tim Bunce
(featuring his Devel::SizeMe module) is also excellent (it opens with a joke about
your "Out of memory!" message I see).
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