<background> I have a perl process that does a lot of memory intensive stuff, then undefs all the big hashes and calls an external, somewhat memory-hungry binary. Trouble is, just undefing the hashes doesn't free nearly the memory it should. The only thing I can think of is that since perl doesn't immediately need that ram, it thinks it's okay to keep going without collecting. </background>

Is there a gentle way to ask perl to kindly collect garbage *now*?

Many thanks,
Grem

In reply to forced garbage collection by Anonymous Monk

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