Check manual page of j4p_performance.threads
Threads of Java application server via JMX and j4p.war - DEPRECATED
Do not use this plugin. It will be removed soon. Use jolokia_metrics instead.
This checks uses the JSON HTTP service of j4p (from jmx4perl) to
monitor the number of threads created by a Java application server like
Tomcat or JBoss. You can define levels against the number of threads
of the Java machine.
Take a look at the j4p_performance.mem manpage for instructions
on how to set up the needed agent plugin.
The instance name as configured in j4p.conf with the variable
One check is created for each JMX instance sent by the agent.