JRockit Mission Control can be started in debugging mode to provide more information. Simply add the –debug flag when launching the jrmc executable. Starting in debug mode will cause various subsystems to behave differently. For example, the console charts will start showing rendering information and log levels will be changed to display more verbose output.

To view the log messages sent to the console on Windows systems, stderr must be redirected somewhere. This is because the jrmc launcher is derived from the javaw launcher. Following is an example:

D:\>%JROCKIT_HOME%\bin\jrmc –consoleLog -debug 2>&1 | more

To only change the logging levels, select a Logging settings file in the Preferences. The logging settings file is a file on standard java.util.logging format. After changing the logging settings, JRockit Mission Control must be restarted.

The following example shows the debug settings used when starting with the –debug flag:

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