Avoid globals (you are using strict, I hope).
You are aware that strict doesn't prevent you from having globals, aren't you? Declaring all your variables at the beginning of the program strict doesn't object to in the least. All it cares about is whether there's a 'my' (or a fully qualified path). It doesn't care about narrow scope. strict is not the silver bullet many people think it is.

In reply to Re^2: How to put a fat program on a (memory) weight-loss diet? by JavaFan
in thread How to put a fat program on a (memory) weight-loss diet? [SOLVED] by locked_user sundialsvc4

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