"RPG400-L" <rpg400-l-bounces@xxxxxxxxxxxx> wrote on 04/07/2016 11:25:39
AM:
Reviewing several examples of trigger programs online, I noticed that
all
of them turned on the LR indicator. For testing, I no-op'd the EVAL
*INLR=*ON so the program would compile, but never have LR turned on.
Duplicating the previous test cycle, without a trigger, the 10 runs
averaged 3.6 seconds. With a trigger, the 10 runs averaged 11.8
seconds.
Yeah, about 16 times faster than when turning LR on.
We opted to write to a data queue to minimize any actual file I/O
in our trigger program. We then have a separate subsystem we created with
long-running listeners for the multiple data queues involved in our
environment (about 588 of them). We also have a monitor job which keeps
track of all these listeners and data queues to manage them and keep them
all in line -- keeping us informed by email of any issues along the way.
At the time I originally wrote the trigger program we weren't
doing this, but now our model is to use the MAIN keyword to specify our
own main procedure and totally eliminate all of the RPG cycle code that
you don't know is being executed under the covers each time your program
is called and terminated. In this model, the *INLR indicator no longer
does anything and if we have any F-specs (or DCL-F) we code them as
*USRCTL -- but we mostly use embedded SQL now.
Sincerely,
Dave Clark
int.ext: 91078
direct: (937) 531-6378
home: (937) 751-3300
Winsupply Group Services
3110 Kettering Boulevard
Dayton, Ohio 45439 USA
(937) 294-5331
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