How to determine the exact cause of the slow response of the product

Question

How can you determine the exact cause of the slow response when using the IBM Rational Application Developer for WebSphere or Rational Software Architect the products?

Cause

1. Select Help > Performance > Profiling > Start CPU Profiling.
   
   
2. You will see a dialog that shows you how to modify the eclipse.ini file in order to launch the JVM with the profiler. This requires adding a line like the following:
   
-agentpath:<Installation directory>\configuration\org.eclipse.osgi\bundles\<bundle number>\1\.cp\os\<OS>\<platform>\yjpagent.dll

   
   
   The dialog will show the actual value of the parameter, customized for that particular installation.
   
   
   
   
3. Modify the file eclipse.ini as directed by the dialog.
   
   
4. Restart the product.
   
   
5. Invoke the menu: Help > Performance > Profiling > Start CPU Profiling.
   
   
6. Choose between Tracing (more accurate, but slower) and Sampling (less accurate, but faster):
   
   
   
   
7. Reproduce the action that causes the performance issue.
   
   
8. Invoke the menu: Help > Performance > Profiling > Take snapshot.
   
   
9. You will see a dialog like the following, that shows the location of the generated profiling file:
   
   
   
   
10. Locate the generated file.
    
    
11. Close the product.
    
    
12. Remember to remove the -agentpath line from the eclipse.ini file.