WebSphere Application Server V7.0: Concepts ... - IBM Redbooks

14.9.8 Application profiling
Application profiling allows you to analyze the application during runtime. It
provides detailed information about what application step uses what amount of
CPU in a graphical way. This allows you to identify critical points inside the
application. While it is intended for developers, we suggest system programmers
encourage the development team to use such a profiling technique. This will
open up the black box application on the host.
A profile tool for z/OS is JinsightLive for z/OS. The tool is capable of analyzing
31-bit and 64-bit JVM. It can be downloaded from the following Web page:
http://www.alphaworks.ibm.com/tech/jinsightlive
Another tool that provides application profiling, would be the Eclipse Test and
Performance Tools Platform (TPTP), a project from the Eclipse platform, found at
the following Web page:
http://www.eclipse.org/tptp/
Note: Application profiling usually requires some level of experience with the
tooling. So do not get confused when you start with the first steps. After you
get used to the technique it is a powerful way of identifying CPU intensive
points in an application. A lot of the critical points require only few changes in
the application itself.
As a starting point you might ask your local IBM representative for some
assistance.
14.10 Planning checklist
This section provides a short overview of what things to consider when you plan
to install the WebSphere Application Server V7.0 for z/OS.
Chapter 14. WebSphere Application Server for z/OS 475