Re: Timestamp vs Date/time Decimal fields, Overhead in RPG programs...

Simon,

Where's what I had...
#Iterations
                                    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 called programs and the called procedure simply RETURN.

I was going to check to see how much of the 12s was from the dynamic
call vs. the RPG cycle, by replacing the called RPG program with an
ILE C program, but the system I was testing on, a 515 running v5r4,
didn't have the C compiler installed.

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.

Charles