This subsection describes the contents of event log of the Explicit Heap Memory Management functionality.

The event log of Explicit Heap Memory Management functionality is output at the timing when events related to the Explicit Heap Memory Management functionality, such as occurrence of garbage collection, initialization, release, extension of Explicit memory block, moving object to Explicit memory block occur. The output contents differ as per the settings of log output level specified in the Java VM start option.

The event log of the Explicit Heap Memory Management functionality can be used for the following purpose:

• Tuning of Explicit HEAP
• Debug of application implementing the Explicit Heap Memory Management functionality
• Statistics collection

For details on the changes in the size of Explicit heap, number of Explicit memory blocks, and changes in each area size of Java heap, see the event log. Furthermore, event log is output as a text file.

Organization of this section

5.11.1 Output trigger of event log of the Explicit Heap Memory Management functionality

5.11.2 Confirmation method of event log of Explicit Heap Memory Management functionality

5.11.3 Contents output when output level is normal

5.11.4 Contents output when output level is verbose

5.11.5 Contents Output when Output Level is Debug