RE: RPG III program calls faster than RPG IV????

I played around with this a little more....

tring the following, using 50M iterations:
OPM --> ILE took 207s
ILE --> OPM took 55s

So it appears the difference isn't in the CALL itself, but instead is in the startup of the called
program.

Charles Wilt
--
Software Engineer
CINTAS Corporation - IT 92B
513.701.1307

wiltc@xxxxxxxxxx

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On Behalf Of Wilt, Charles
Sent: Thursday, July 24, 2008 10:23 AM
To: RPG programming on the AS400 / iSeries
Subject: RPG III program calls faster than RPG IV????

All,

I was doing some benchmarking on an unused 515 running v5r4, and I'm
seeing some results that
surprised me...

                        5M    50M
OPM calling OPM         6s    62s
Dynamic Program Call    12s   122s
Bound Procedure         1s     4s

--In the first case, an RPG III *PGM was calling another RPG III *PGM
(which returned with LR =
*OFF).
--In the second case, an RPG IV *PGM was calling another RPG IV *PGM
(which returned with LR = *OFF).
--In the third, an RPG IV *PGM was calling a RPG IV procedure in a
*SRVPGM.

Both of the called programs and the called procedure simply RETURN.


I'm a little surprise to see RPG III program calls performing better than
RPG IV program calls.  I
thought perhaps it was activation group related.  Initially, I had *NEW
calling *CALLER.  I tried
changing both program to run in the same named activation group.  That had
no effect.  So I tried
changing both to DFTACTGRP(*YES). That had a little effect, lowering the
times to 11s and 110s.

Does anybody have a explanation?


Charles Wilt

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