Impact of calling structure on performance

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1

I heard there is a difference in performance between the several ways of calling a subprogram.

Which is the one that has the best performance and why ?

2

There is only one way to invoke a subprogram, namely a CALLNAT. Are you interested in things like cost of transferring data (PDA (direct and BY VALUE), Stack, etc)?

3

There is only one way to invoke a subprogram, namely a CALLNAT. Are you interested in things like cost of transferring data (PDA (direct and BY VALUE), Stack, etc)?

4

Yes, I would like that. Also, if possible, if it would be better to include the code within the program as subroutine io subprogram.