JMX Monitor
- Introduction
- Download
- Configurations
- Useful JMX Attributes
- Sun SMF
Project Documentation
The JVM exposes a range of extremely useful monitoring locations
| ObjectName | Attributes | Notes |
| java.lang:type=ClassLoading | LoadedClassCount | |
| java.lang:type=GarbageCollector,name=ConcurrentMarkSweep | CollectionTime CollectionCount |
|
| java.lang:type=GarbageCollector,name=ParNew | CollectionTime CollectionCount |
|
| java.lang:type=Memory | HeapMemoryUsage.commited HeapMemoryUsage.used NonHeapMemoryUsage.commited NonHeapMemoryUsage.used |
|
| java.lang:type=Threading | ThreadCount |
The C3PO connection pool provides detailed JMX instrumentation.
The attributes let you monitor all aspects of the pool the operations are detailed on http://www.mchange.com/projects/c3p0/apidocs/com/mchange/v2/c3p0/PooledDataSource.html
Due to C3P0 naming of the beans you have to use a wildcard object name (and if using more that one connection a discrimator) to monitor them.