RE: RPG vs. Java vs. C++

I think the question management should be asking is "How much can we
afford to spend on a new iSeries?" Seems to me that regardless of what
language you use you just don't have enough horsepower.  Generally the
problem with legacy software is that it's hard to read and hard to
modify.  It can perform well in spite of that. 

They may find that it's cheaper to upgrade the computer than to replace
the software. 

-----Original Message-----
From: rpg400-l-bounces@xxxxxxxxxxxx
[mailto:rpg400-l-bounces@xxxxxxxxxxxx] On Behalf Of Brian Piotrowski
Sent: Thursday, March 24, 2005 12:56 PM
To: RPG programming on the AS400 / iSeries
Subject: RPG vs. Java vs. C++

Hi All,



I know this is off-topic, but I'd like to get everyone's thoughts on
this subject.



If this has been discussed ad-nauseum, I apologize in advance.



Management has asked if there would be any value to having additional
applications on our iSeries that were not designed in RPG.  Rather, they
asked the impact that using Java or C++ based applications would have on
the server.



Does anyone have any data or performance metrics (or better yet, links!)
they could share to give me an idea on how a Java app would perform on
an AS/400 vs. a C++ app. Vs. an RPG app?



The reason management has been asking is due to the legacy programs that
run on our machine.  We are currently running a 720 series w/2GB main
storage and 175GB raid 5 array with 90% of the programs written in-house
(and before my time).  At any given time, when I look at the performance
of our AS/400 (through system status), and it always seems to be above
65% (or it's often at ++++ when I look at it).



Management wonders if these programs were rewritten in C++ or Java if it
would have a positive effect on the server?



Any comments are welcomed and appreciated.



Thanks,



Brian.



-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-

Brian Piotrowski

ISD Specialist

Simcoe Parts Service, Inc.

6795 Industrial Parkway

Alliston, ON, L9R1W1

bpiotrowski@xxxxxxxxxxxxxxx

ph: 705-435-7814 x343

fx: 705-435-6746

-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-



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