Of course this does not mean that part of the memory not used by Perl, automatically can be used by other application. This question belongs to the architecture of the undrelying OS, and is not related to Perl.
That's not entirely true. Certainly, whether or not the OS is able to accept memory back from the OS isn't related to perl. But if perl runs on an OS that does allow for processes to return memory back to the OS during the lifetime of the process, then it becomes related to perl. Because then perl would actually have to make the appropriate system calls to give memory back.

In reply to Re^2: Memory reusability by JavaFan
in thread Memory reusability by abubacker

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