Return vs LR

[Jon.Paris@xxxxxxxxxx]

 >> Is this still true with ILE programs that are created in a named
activation group if that AG stays active?

Yes it is.  When using an AG you introduce a third possible state for the
program.  The three are:

1) Called previously and returned with LR off - same as OPM (the most
efficient)

2) Called previously, and ran in an Activation Group which still exists.
(second best)

3) Never Called or Called previously and returned with LR on - same as OPM.
(the worst)


For the second one, the compiler generates code that allows the program to
"pretend" to go away.  When it is called again internal logic re-opens the
files, initializes the storage, etc.  The only time that is saved is the
initial program resolution.


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