A technique which nobody has mentioned above is simply comparing against a control group. Time a few thousand iterations loading the module, 
% for e in `seq 1000` ; do perl -Mmymodule -e1 ; done

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Then time a few thousand iterations of not loading the module. 
% for e in `seq 1000` ; do perl -e1 ; done

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Subtract the control group timing from the target group timing. What difference do you find?

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[ e d @ h a l l e y . c c ]

In reply to Re: Timing a Module Load by halley
in thread Timing a Module Load by geekondemand

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