To use the WebSphere Performance Analysis Reports, WAS must be enabled in Application Performance Analyzer by your installation, and the WAS data extractor must be turned on when the Observation Request is entered. You select the WAS data extractor in the Options panel when creating a new measurement. The WAS data extractor is valid only if the target job is an active WAS controller address space. The WAS controller is not actually sampled, since no application code runs in a WAS controller. Instead, all WAS requests processed by the target WAS controller are recorded in the sample file. The sampling frequency will be changed to 1 per second and the number of samples will be changed to the sampling duration in seconds when the WAS measurement request begins. No other data extractors are allowed if the WAS option is selected.
When the WAS data extractor is selected, SMF records are activated for the target WAS controller address space. The SMF records contain information about each WAS request processed by the server. This SMF data is extracted and written to the sample file.
The sum of CPU times and service times for the breakdown will not add up to the CPU time and service time for the request, since not all activity is recorded in the breakdown when processing a request.
Similarly, the invocation count for a servlet/JSP or method will not add up to the request count at the request level.