Re: different testing OS

[Ron Cordell <roncordell@attbi.com>]

On Tuesday 09 April 2002 04:49 pm, Cynthia Jeness wrote:

>
> I do a lot of cross-platform development on both the client and the
> server-side.  In particular, I may develop on Linux , OS/2 or Solaris and
> then deploy on OS/2, Win/98, WinNT, AIX, Solaris, Linux etc.  We have even
> attempted to deploy to OS/390 mainframes; however, the Java in this
> environment is pretty slow.  In all evironments, I always require JDK 1.3.
>

Cynthia,

I am curious about your experiences with deploying and running from the 
mainframe. I am working with a client that wishes to deploy WebSphere on 
OS/390 Unix System Services. There are some interesting issues with this 
environment with respect to this client. WebSphere for z/OS and OS/390 uses 
only remote interfaces for EJB's, so that's a problem. But more 
interestingly, instances of application servers are controlled by the 
mainframe's load control mechanism, and can be dynamically instantiated and 
destroyed as demand changes. Somehow my client feels that spending money with 
IBM to increase the resources required to support WebSphere in this 
environment is OK, while using a separate hardware tier is not.

In any case, you mention that the JVM on mainframes is a poor performer. Can 
you elaborate?

Thanks,

Ron Cordell