Sun Microsystems 820433510 manual 18JVM Statistics for Java SE- Compilation

About Monitoring

TABLE 18–17JVM Statistics for Java SE- Class Loading		(Continued)
Statistic	Data Type	Description
totalloadedclasscount	CountStatistic	Total number of classes that have been
		loaded since the JVM began execution.
unloadedclasscount	CountStatistic	Number of classes that have been
		unloaded from the JVM since the JVM
		began execution.

The statistics available for compilation in the JVM in Java SE are shown in the following table.

TABLE 18–18JVM Statistics for Java SE- Compilation

Statistic	Data Type	Description
totalcompilationtime	CountStatistic	Accumulated time (in milliseconds) spent
		in compilation.

The statistics available for garbage collection in the JVM in Java SE are shown in the following table.

TABLE 18–19JVM Statistics for Java SE- Garbage Collection

Statistic	Data Type	Description
collectioncount	CountStatistic	Total number of collections that have
		occurred.
collectiontime	CountStatistic	Accumulated collection time (in
		milliseconds).

The statistics available for memory in the JVM in Java SE are shown in the following table.

TABLE 18–20JVM Statistics for Java SE- Memory

Statistic	Data Type	Description
objectpendingfinalizationcount	CountStatistic	Approximate number of objects that are
		pending finalization.
initheapsize	CountStatistic	Size of the heap initially requested by the
		JVM.
usedheapsize	CountStatistic	Size of the heap currently in use.
maxheapsize	CountStatistic	Maximum amount of memory (in bytes)
		that can be used for memory management.

188 Sun GlassFish Enterprise Server 2.1 Administration Guide • December 2008