Re: Performance tips for WAS Express 6.0

The application accesses data files.  The files are being accessed via
embedded SQL in a RPG service program on the iSeries.  The service program
is being called via a web interaction in my JSP file.  I don't know how the
WAS Express 6.0 was setup as it was setup by our System Administrator, and
he is out on medical leave this week.  Should be back next week.  Before he
went out on medical leave he installed my application under WAS Express 5.0
which we still have running on our system, and it was like night and day.
The application runs 100 times faster under 5.0 than it does under 6.0.
There must be an issue with the way he set that all up.  I'll just have to
wait until he gets back, and see if can figure anything out then.

Thanks,
Mike

----- Original Message ----- 
From: "Joe Pluta" <joepluta@xxxxxxxxxxxxxxxxx>
To: "'Websphere Development Studio Client for iSeries'"
<wdsci-l@xxxxxxxxxxxx>
Sent: Friday, October 07, 2005 11:17 PM
Subject: RE: [WDSCI-L] Performance tips for WAS Express 6.0


> There are a ton of things you can do to help your programs, but a lot
> depends on how you write your code.  Are you accessing data files?  If
> so, how?  Are you using JDBC?  Connection pools?   EJBs?   Also, be sure
> you have a separate pool set up for the web application server.  Since
> web app servers are Java applications, they require a JVM.  JVM paging
> requirements seem to be at odds with normal OS/400 paging so they work
> best when they have their own pool with anywhere from 500MB on up,
> depending on the size of your application.
>
> Joe
>
> > From: Michael Soucy
> >
> > Does anyone out there know of any place where I could find some
> > performance tips to help speed up applications running on WAS Express
> 6.0?
> > We have an iSeries model 810 running WAS express 6.0.  I have a web
> tools
> > application that I've written.  The application was written using
> WDSCi
> > v5.1.2.4, and is very simple (which would make it J2EE version 1.3).
> The
> > application is a slow running.  We are planning to move to WDSCi v6.0
> as
> > soon as possible.  Will this help any?  The only thing we did to help
> > performance was when the application was installed we selected the
> > "precompile JSP" option.  Does anyone have any suggestions?  I hope
> this
> > is the proper place to post this topic.
>
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