Help Center/ Application Performance Management/ User Guide (2.0) (Kuala Lumpur Region)/ Service Overview/ Metric Overview/ Basic Monitoring/ Netty Memory

Updated on 2024-07-04 GMT+08:00

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Netty Memory

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

**Table 1** Netty memory metrics
Category	Metric	Name	Description	Unit	Data Type	Default Aggregation Mode
Memory (memory: memory metrics)	directMemoryUsage	directMemoryUsage	Used direct memory	-	INT	AVG
Memory (memory: memory metrics)	maxDirectMemory	maxDirectMemory	Maximum direct memory	-	INT	MAX
Exception (exception)	causeType	Class	Class	-	ENUM	LAST
	exceptionType	Exception Type	Exception type	-	ENUM	LAST
	count	Count	Count	-	INT	SUM
	message	Exception Message	Exception message	-	STRING	LAST
	stackTrace	Exception Stack	Exception stack	-	CLOB	LAST

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