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Version Warning These JMX bean names are accurate for the current version of Tomcat 7 (7.0.37 at the time of this writing). If you are using a different version of Tomcat, you may have to adjust the names of the beans identified on this page. |
Thread Usage
Wiki Markup JMX Bean: {{Catalina:type=Executor,name=\[executor name\]}}- Attributes:
poolSize,activeCount
This is the number of threads currently in the executor's thread pool. Obviously, this is only useful if you are using an <Executor> (which you are using, of course, right?).
Not using an Executor
Wiki Markup JMX Bean: {{Catalina: type=ThreadPool,name="\[depends\]"}}- Attributes:
maxThreads,connectionCount
This information is largely useless in Tomcat 7, as an Executor is always used and the data can be found there, while the ThreadPool has only initial configuration information: the real-time data is available from the Executor's MBean.
Request Throughput
Wiki Markup JMX Bean: {{Catalina:type=GlobalRequestProcessor,name="\[depends\]"}}- Attributes:
bytesSent,bytesReceived,errorCount,maxTime,requestCount - Operations:
resetCounters
Sessions
Wiki Markup JMX Bean: {{Catalina:type=Manager,context=\[context name\],host=\[hostname\]}}- Attributes:
activeSessions,sessionCounter,expiredSessions
JNDI DataSource
Wiki Markup JMX Bean: {{Catalina:type=DataSource,context=\[context name\],host=\[hostname\],class=javax.sql.DataSource,name="\[JNDI name\]"}}- Attributes:
numActive,numIdle
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