Hi, currently I am using WAS 3.5.4 in my AS400. Actualy I am doing the feasibility study on this before implement it to the company. There are few questions in my mind and I do hope anyone of your can provide me some idea.
1. Performance issues.
2. Comparing JSP,Servlet with RPG.
3. Comparing WAS in other platform with AS400.
1. Performance issues
In here, the performance I am referring is the CPU ultilization of my AS400 system. I remember one time when I am accessing my JSP page, my server (AS400) reach until 80-90% and the whole system hang. End-up I found out that is because my JSP pages coding have syntax error. Anyway, that's not my point here. I am hoping anybody can share information with me regarding this WAS in AS400 system in terms of performance issues .
Besides this, if my pages and everything is in ok, then the CPU ultilization is not quite bad (10-25%). But I haven't try a senerio when all the branches accessing the pages and the respond time of each pages either is satisfied or not. This is my second concern under this performance issues.
If i am not mistaken, the processing WAS in my AS400 is Batch-CPU processing and the web-server is interactive-cpu. And if so, then my AS400 ultidsfl shouldn't be very high.(Am I right?)
2. JSP, Servlet and RPG
There is 2 key things in here I would like to mention. Ease of learning comparing this 2 major programming language and how much different in terms of development time of this 2 language.
I can conclude that my main concern is my colleagues. They are more used to RPG programming language, and my current system is coded in such a way. So, I am wondering if I am going to share my JSP and servlet knowledge with them, will they have any problem to pick up this language or not. No doubt, learning curve of JSP and servlet is taugh. And if you don't have foundation on OO concepts, you might face problems here.
3. WAS in AS400
I know that WAS can run on AIX, AS400, NT and event linux. But how is the benchmark comparing with all this. Anyone of you know any web-sites which already done this kind of comparison before. Can share with us??
For conclusion, please treat this as a forum or disscussion. And I do hope all the WebSphere exprt here can share information with each others.