Li, Qiao 01222743d0 APM2.0 UMN 20230825 version

Reviewed-by: Mützel, Andrea <andrea.muetzel@t-systems.com>
Co-authored-by: Li, Qiao <qiaoli@huawei.com>
Co-committed-by: Li, Qiao <qiaoli@huawei.com>

2024-06-18 07:09:10 +00:00

GC Monitoring

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

**Table 1** GC metrics
Category	Metric	Name	Description	Unit	Data Type	Default Aggregation Mode
GC statistics (gc)	fullGCCount	fullGCCount	Number of full GC times in a collection period	-	INT	SUM
	fullGCCountTotal	fullGCCountTotal	Total number of full GC times	-	INT	SUM
	fullGCTime	fullGCTime	Full GC duration in a collection period	ms	INT	SUM
	fullGCTimeTotal	fullGCTimeTotal	Total full GC duration	ms	INT	SUM
	fullGCMBeanName	fullGCMBeanName	Name of the full GC recycler	-	STRING	LAST
	youngGCCount	youngGCCount	Number of young GC times in a collection period	-	INT	SUM
	youngGCCountTotal	youngGCCountTotal	Total number of young GC times	-	INT	SUM
	youngGCTime	youngGCTime	Young GC duration in a collection period	ms	INT	SUM
	youngGCTimeTotal	youngGCTimeTotal	Total young GC duration	ms	INT	SUM
	youngGCMBeanName	youngGCMBeanName	Name of the young GC recycler	-	STRING	LAST
GC details (gcdetail)	action	action	GC type, which can be major or minor	-	ENUM	LAST
	cause	cause	GC cause	-	ENUM	LAST
	name	name	GC collector name	-	STRING	LAST
	count	count	Number of times that GC has occurred	-	INT	SUM
	totalTime	totalTime	GC duration	ms	INT	SUM
	maxTime	maxTime	Time consumed by the slowest GC	ms	INT	MAX
	detail	detail	Details about the slowest GC	-	CLOB	LAST

Parent topic: Basic Monitoring