Memory that is actually freed (which you can do by setting a variable to undef) gets returned to Perl for other uses and in some cases on some systems gets returned to the OS. If you don't explicitly undef, it stay allocated to the variable that used it.

In reply to Re: Re^2: Does using globals via our() in mod_perl scripts lead to apache child size growth? by perrin
in thread Does using globals via our() in mod_perl scripts lead to apache child size growth? by Hero Zzyzzx

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