RE: RPG III program calls faster than RPG IV???? -- RPG400-L

Geezz...here you go....again <grin>

Originally the call was prototyped. But I tried a non-prototyped call also to see if there was a
difference.

I also moved from a FOR loop to a DO loop like the RPG III.....

* Begin OPMPGM1
I 50000000 C NBRLPS
I 'OPMPGM2' C PGM
C 1 DO NBRLPS IDX 100
C CALL PGM
C ENDDO
C MOVE *ON *INLR
C RETRN

* Begin OPMPGM2
C RETRN

//Begin DYNPGMCALL
h dftactgrp(*YES)
d i s 10i 0

c 1 do 50000000 i
c call 'CALLEDPGM'
c enddo
c eval *inlr = *on
c return

//begin CALLEDPGM
h dftactgrp(*YES)
c return

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 Crispin Bates
Sent: Thursday, July 24, 2008 10:54 AM
To: RPG programming on the AS400 / iSeries
Subject: Re: RPG III program calls faster than RPG IV????

Do you want to share the code?

----- Original Message -----
From: "Wilt, Charles" <WiltC@xxxxxxxxxx>
To: "RPG programming on the AS400 / iSeries" <rpg400-l@xxxxxxxxxxxx>
Sent: Thursday, July 24, 2008 10:22 AM
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
--
Software Engineer
CINTAS Corporation - IT 92B
513.701.1307
wiltc@xxxxxxxxxx

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