blackaddr,
The following is stolen from Elian's homenode, I think it should get you started.

Curious about how big your variables or data structures are? Try Devel::Size

Cheers - L~R

Update: As Elian pointed out, I am an idiot. Since you have already answered your own question there is nothing more I can do but watch the downvotes ;-)

In reply to Re: constantly monitoring the size of an object by Limbic~Region
in thread constantly monitoring the size of an object by blackadder

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