Hybrid TPTP scenario

TPTP Profiler users

• Harm Sluiman

Usage scenarios

Requirements and set up

To run this simple two tier application follow these steps:

1. Install a default image of Tomcat 5.5 or newer
2. Put your JRE 1.5 or newer on the path and run the tomcat5.exe in the tomcat bin directory
3. open the tomcat welcome page or go to http://127.0.0.1:8080/ for a local install.
4. login with the default userid and pwd
5. run some of the sample applications to confirm things work, and then try the JSP SVG (http://127.0.0.1:8080/jsp-examples/jsp2/jspx/svgexample.html) sample. This will give show tell you how to run the sample.
6. download and unzip a recent batik binary driver from Apache
7. with your JRE on the path run java -jar batik-squiggle.jar and enter the url provided when running the earlier jsp sample (http://127.0.0.1:8080/jsp-examples/jsp2/jspx/svgexample.html)

You now have a running two tier java application. This is all free open source so easy to install and recreate as needed. You can try all this out on one machine but clearly the two processes will affect each other so using two machines for more formal measurement is better and creates the need for remote monitoring using the profiler.

Most general case:

1. profile the squiggly browser when running the Tomcat 5.5 SVG jsp example
   1. experience
2. isolate the time spent in the batik code versus the browser code or on the network using the class/method statistics views in TPTP
3. profile the jsp on the tomcat server
4. isolate the time spent in the jsp generated code and support libraries versus the tomcat server itself.
5. compare these result to an end user clock
6. optionally create a TPTP URL test for repeated testing of the server code without needing the browser

Required features:

1. tbd

Ideal profiler

The ideal profiler will let me profile both of these applications at the same time or independently as well as show the network separations and impacts. At least one of these applications is normally on an separate machine so I would need remote support as well.

For the initial use case I only need to assess time spent, but it is important to note that I actually don't know the code I am profiling and am using the profiler to learn something about this code base before I write a line of code.

Opened Bugzillas

none yet

Problems observed

• set config does not run wiht common JRE environments
• IAC does not have a configuration file for standalone use
• plain windows workbench install of 4403 includes binaries for linux IAC
• IAC does not start until a test connection is attempted
• filters set in attach config are called default, but properties variant is called __JVMPI__
• After detaching and attaching to an agent, no more data is collected/sent to the workbench
• After deleting profiling sessions/connections navigator shows status of all deleted connections
• Attach and collect with execution details turned on, and method data is not rendered
• double click a numbered unknown method and a NPE occurs.
• Even when Execution flow shows threads and unknown methods, the UML diagrams do not have any data
• Execution flow has 14 threads and Execution details only shows 2 AWT threads