Enable the Java virtual machine profiler data

 

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Use the Java virtual machine profiler, Java Virtual Machine Tool Interface (JVMTI), to collect data about garbage collection and thread states from the JVM that runs the appserver. When JVMTI is enabled, a collection of JVMTI-specific statistics can be enabled through the predefined All statistic set or through the use of a Custom statistic set.

To enable JVMTI data reporting for each individual appserver:

1. Open the admin console.

2. Click...

   Servers | Server Types | WebSphere application servers | appserver | Server Infrastructure | Java and process management | Process definition | Java virtual machine

3. In the Generic JVM arguments field, set...

   -agentlib:pmiJvmtiProfiler

4. Click Apply or OK.

5. Click Save.

6. Click...

   Servers | Server Types | WebSphere application servers | appserver | Configuration tab | Performance | Performance Monitoring Infrastructure

   PMI can be enabled only in the Configuration tab.

7. Select the check box...

   Enable Performance Monitoring Infrastructure (PMI)

8. Click...

   Custom | JVM Runtime | JVM Runtime | JVM profiler group

9. Enable or disable the statistic on the right-side table. Go back to the main PMI configuration page, by clicking PMI.

10. Click Apply or OK.

11. Click Save.
12. Cycle the appserver

    The changes you make will not take effect until you restart the application server.

13. Refresh Tivoli Performance Viewer

 

Related tasks

Enable PMI
Java virtual machine profiling
Enable PMI using wsadmin