Agent Monitoring

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

**Table 1** Agent monitoring metrics
Category	Metric	Name	Description	Unit	Data Type	Default Aggregation Mode
Probe data (detail: probe data metric set)	type	Data Type	Type of data reported by the probe	-	ENUM	LAST
	discardBytes	Discarded Bytes	Number of discarded bytes	Byte	INT	SUM
	discardCount	Discard Times	Number of times that the type of data is discarded	-	INT	SUM
	errorBytes	Bytes Not Sent	Number of bytes that fail to be sent	Byte	INT	SUM
	errorCount	Send Failures	Number of times that the type of data fails to be sent	-	INT	SUM
	maxBytes	Max. Bytes	Maximum number of sent bytes	Byte	INT	MAX
	maxQueueSize	Max. Queue Size	Maximum length of the sending queue	-	INT	MAX
	sendBytes	Sent Bytes	Number of successfully sent bytes	Byte	INT	SUM
	sendCount	Successful Send Times	Number of times that the type of data is successfully sent	-	INT	SUM
	sendTotalTime	Total Send Time	Total sending time of the data type	ms	INT	SUM
	slowTime	Max. Send Time	Maximum sending time of the data type	ms	INT	MAX
Exception (exception: exception metric set)	causeType	Exception Class	Exception class	-	ENUM	LAST
	type	Type	Exception type	-	ENUM	LAST
	count	Count	Number of exceptions	-	INT	SUM
	message	Message	Exception message	-	STRING	LAST
	stackTrace	Stack	Exception stack	-	CLOB	LAST
Server connection monitoring (transfer: server connection monitoring metric set)	host	Host	Host information	-	ENUM	LAST
	connectIp	Connection IP Address	Connection IP address	-	STRING	LAST
	ipList	IP Addresses	All IP addresses	-	STRING	LAST
	isConnected	Connected or Not	Connected or not	-	INT	LAST
	rt	RT	Response time	ms	INT	AVG
Queue monitoring (repository: queue monitoring metric set)	monitorQueueSize	Size of Monitoring Data Queue	Size of the monitoring data queue	-	INT	SUM
	monitorObjectSize	Memory Size of Monitoring Data	Memory size of the monitoring data	-	INT	SUM
	traceQueueSize	Size of Trace Data Queue	Size of the trace data queue	-	INT	SUM
	traceObjectSize	Memory Size of Trace Data	Memory size of the trace data	-	INT	SUM