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Mostly true yes.
In a CGI environment multiple jobs are started and a CGI job will get the next
CGI request. While on the iSeries it is mostly true that the same client will
often be routed to the same CGI job, it is not guaranteed. 
However, if what you're really saying is:
Once a CGI program is initially called, it remains in memory so that subsequent
calls to that same CGI program/job are initiated faster. 

Then, yes that's a good assumption when Named activation groups are used for the
CGI program.

-Bob Cozzi
www.iSeriesTV.com
Ask your Manager to watch iSeriesTV.com

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx] On
Behalf Of jbender@xxxxxxxxxxxxxxxxx
Sent: Wednesday, September 06, 2006 7:27 AM
To: RPG programming on the AS400 / iSeries
Subject: RE: Connection Pooling - Activation Groups


Scott/Bob,

Thanks for making this more clear for me to understand.

(So the below statement would be true)
In my situation working with the Web users, once this activation group has
been loaded into memory, any connections from the web calling this program
will have this activation group available to them. This activation group is
available until its deleted out of memory (reclaimed).

Thanks
Jason Bender
EDPS (Electronic Data Processing Services)
jbender@xxxxxxxxxxxx
804/353-1900 Extension 2887


 

                      "Bob Cozzi"

                      <cozzi@xxxxxxxxx>         To:       "'RPG programming on
the AS400 / iSeries'" <rpg400-l@xxxxxxxxxxxx>            
                      Sent by:                  cc:

                      rpg400-l-bounces@m        Subject:  RE: Connection Pooling
- Activation Groups                                    
                      idrange.com

 

 

                      09/05/2006 05:03

                      PM

                      Please respond to

                      RPG programming on

                      the AS400 /

                      iSeries

 

 





Scott,

Just to be more clear, the program doesn't run faster, it loads and starts
running in a shorter timeframe than it did previously because no activation
group is being created.

Just didn't want Jason to think the program runs faster the second time. It
runs
the same, although the start-to-end delta gives one the impression that the
program ran faster, it was just the removal of the steps in the path that
allow
it to start up quicker.

-Bob Cozzi
www.iSeriesTV.com
Ask your Manager to watch iSeriesTV.com

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx [mailto:rpg400-l-bounces@xxxxxxxxxxxx]
On
Behalf Of Scott Klement
Sent: Tuesday, September 05, 2006 3:58 PM
To: jbender@xxxxxxxxxxxxxxxxx; rpg400-l@xxxxxxxxxxxx
Subject: Re: Connection Pooling - Activation Groups


Hi Jason,

I'm sending a copy of my reply back to the RPG400-L mailing list, since
it's where this thread started, and I feel it's important for follow-ups
to go there as well. That way, everyone has a chance to learn, and
everyone has a chance to make comments.

In keeping your activation group open, lets say the program is called
again, what happens with the activation group? Does it get closed or will
it try to reclaim the activation group?

ILE programs are loaded into memory (the technical term for that is called
"activation") into an activation group.  The program then remains in
memory until the activation group is reclaimed (i.e. deleted from memory.)

Let's say you compile your program with ACTGRP(JASON).  The first time
this program (or any other program with the same activation group name) is
called, the activation group gets created in memory. Your program is then
loaded from disk into memory into this activation group. It's then run.

On subsequent calls (assuming you haven't reclaimed the activation group)
the program is already loaded into memory, and therefore runs very fast
because it doesn't have to be re-loaded into memory.

If you're writing an RPG program, and the program ended with *INLR off,
the files can be left open from call to call, which speeds things up even
further since the files don't have to be closed and re-opened on every
call.

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