Interesting metrics from JMX

May I know what are the typical metrics that application developers usually find interesting with the use of JMX other than开发者_高级运维:

• CPU Utilization
• Memory consumption

Nicholas

I would add:

• Class loaders behaviour
• Threads

• memory usage diagram (you can see gc runs and detect memory leaks)
• stack trace of specified thread
• jvm uptime, OS information
• all jmx exposed data with your application

• Garbage Collector Activity (duration and frequency)
• Deadlock Detection
• Connector Traffic (in / out)
• Request processing time
• Number of sessions (in relation to max configured)
• Average Session duration
• Number of sessions rejected
• Is Webmodule running ?
• Uptime (if less than 5 minutes, then someone restarted the JVM)
• Connector threads relative to the max. available connector threads
• Datasource Pools: Usage (relative), Lease time
• JMS: Queue size, DLQ size

See also Jmx4Perl's predefined Nagios Check for further metrics ....

JMX can be used to support any of the MXbeans metrics. Refer Java Documentation - http://docs.oracle.com/javase/7/docs/api/java/lang/management/ManagementFactory.html section Method Summary.