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That's what I figured - EXTPGM results in a dynamic call, same as simple CALL.

On 2/11/2013 1:53 PM, Buck Calabro wrote:
On 2/11/2013 2:38 PM, Vernon Hamberg wrote:

I didn't see a test for a CALLP of an EXTPGM vs CALLP of EXTPROC.

As you know, CALLP is not "call procedure" - it is "call prototyped" and
can either be to a program or a procedure.

I'd expect CALLP - EXTPGM to perform about the same as a regular CALL.
But I've not tried it.
I see no appreciable difference in 100000 iterations between a CALL and
a CALLP of the same program prototyped as EXTPGM run in the same AG.

CALL PGM LR on: 242000
CALL PGM LR off: 228000
CALLP EXTPGM LR on: 225000
CALLP EXTPGM LR off: 211000


I figured that I'd post performance numbers since the OP asked about
relative performance. I missed which relatives he was looking to
compare :-)
--buck


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