The OP is, in effect, making two allocations with a free between them. The first allocation is a very large AOH that causes Perl to allocate very near 2 GB. That allocation is then "freed" by undefing the array containing the hashes. Then a largish array is allocated containing integers. It is in the second phase that I infer things are going pear shaped for the OP, although I can't reproduce that behavior.

Perl doesn't generally free memory back to the system, but the space released following the first large allocation should be available for the second allocation however.

Perl's payment curve coincides with its learning curve.

In reply to Re^3: out of memory problem after undef by GrandFather
in thread out of memory problem after undef by sduser81

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