In the WebSphere admin console, expand Monitoring and Tuning > Performance Viewer > Current activity. Select a node, server, or cluster. This will display the Tivoli Performance Viewer.
There is no need to select the Start Logging button to watch the collection of performance metrics in real time. The Start Logging button justs writes the events to a log file so that you can "replay" the monitoring later. For more on Start Logging, check out this article. By default, the Servlets Summary Report is displayed. By default, the Servlets Summary Report is displayed.
In this example, the Snoop Servlet was refreshed twice to generate some data.