ATG’s Performance Monitor component provides a tool you can use to monitor the performance of regions of your code. To use the Performance Monitor:
Instrument your Java code with static methods that enable the Performance Monitor to gather information about performance (see Adding PerformanceMonitor Methods to your Code).
View the Performance Monitor page in the Dynamo Administration UI to inspect information gathered (see Viewing Performance Monitor Data).
The Performance Monitor can run in different modes. In normal (default) mode it causes negligible overhead, but allows you to globally turn on one or more monitoring options which give more diagnostic information. These monitoring options would typically be used during load testing but are not suitable for running on a live site under heavy load. See Performance Monitor Modes.