Tomcat Monitoring

This section describes the types, names, and meanings of Tomcat metrics collected by APM.

**Table 1** Tomcat metrics
Category	Metric	Name	Description	Unit	Data Type	Default Aggregation Mode
Tomcat information (tomcatInfo: Tomcat package version statistics)	tomcatVersion	Tomcat Version	Tomcat version	-	STRING	LAST
Tomcat port monitoring (tomcat: APM counts statistics of Tomcat threads and connections by Tomcat port.)	name	Port Name	Port name	-	ENUM	LAST
	currentThreadCount	Current Threads	Number of current threads on the port	-	INT	AVG
	currentThreadsBusy	Busy Threads	Number of busy threads on the port at the time of collection	-	INT	AVG
	currentThreadsBusyMax	Max. Busy Threads	Maximum number of busy threads on the port in a collection period	-	INT	MAX
	maxThreads	Max. Threads	Maximum number of threads on the port	-	INT	MAX
	maxConnections	Max. Connections	Maximum number of connections on the port	-	INT	MAX
	connectionCount	Current Connections	Number of current connections of the port at the time of collection	-	INT	MAX
	connectionCountMax	Max. Connections	Maximum number of connections on the port in a collection period	-	INT	MAX