Column information

Since many of the columns are available from more than one view, an explanation of the different columns available in the statistics views is provided here. The columns displayed in each view can be customized by right-clicking in the view and selecting Choose Columns from the menu. Package

The name of the package. Class Names

The name of the class. Instance Name

Each object instance is given a unique name so that it can be easily identified. The naming convention is class name.id, where ID is a sequential ID for each class. Method Names

The name of the method. Delta

When a refresh is performed as described in Using the Profiler, this symbol is shown for any rows that are new since the last refresh of the view.

Individual cells whose values have changed since the last refresh are displayed with icons that indicate an increase or decrease . Calls

When a row is displayed at the method level (in the class method or method statistics view), this column shows the number of times the method has been called. For rows that are displayed at a class level, the total number of calls for all methods of the class or class instance are displayed. When a row is displayed at a package level, calls to methods of classes belonging to the package are summed. Inherited Calls

Number of Calls plus the number of calls made to inherited methods. Base Time

The total time spent executing the method(s) for the current row. It does not include time spent in other methods that are called by this method. Inherited Base Time

Base Time plus the time spent in inherited methods. Average Base Time

The average time spent in each execution of the method(s). Cumulative Time

The time spent executing the method(s), including any methods that are called by it. Inherited Cumulative Time

Cumulative Time plus the time spent in inherited methods. Collected

The number of object instances that have been garbage collected. Live Instances

The number of object instances that currently exist. Total Instances

The number of object instances that have been created, including live instances and ones that have been garbage collected. Total Size

The size in bytes of all instances that were created for the selected package, class or method. It includes instances that have already been garbage collected. Active Size

The total size in bytes for all live object instances.

Important: All times displayed in the Profiler are execution clock times, and not CPU times. Hence execution times can be affected by context switching if other programs and processes are executing. We recommend that you shut down all unnecessary programs, services, etc., to minimize the impact of this. We also recommend that tests are performed more than once, since results may be affected by transient factors on the test machine and hence results from individual runs may not be representative of normal performance.

  Prev | Home | Next

 

WebSphere is a trademark of the IBM Corporation in the United States, other countries, or both.

 

IBM is a trademark of the IBM Corporation in the United States, other countries, or both.