Startup Performance Collection

AppLaunch is a collector to collect the startup performance. The information includes the categories, names, descriptions, units, data types, and default aggregation modes of metrics.

**Table 1** Startup performance collection (AppLaunch) metrics
Category	Metric	Name	Description	Unit	Data Type	Default Aggregation Mode
Startup performance metric set (Launch: the startup performance metric set)	total	Total Startups	Total number of startups	-	INT	SUM
	deviceCount	Total Devices	Total number of devices that started up	-	INT	SUM
	crashCount	Failed Startups	Number of failed startups	-	INT	SUM
	slowCount	Slow Startups	Number of slow startups	-	INT	SUM
	avgT0	Avg. Startup Time	Average startup time	-	DOUBLE	AVG
	avgT1	Avg. App Pre-load Time	Average app pre-load time	-	DOUBLE	AVG
	avgT2	Avg. App Load Time	Average app load time	-	DOUBLE	AVG
	avgT3	Avg. View Load Time	Average view load time	-	DOUBLE	AVG
	avgT4	Other Time (Avg.)	Other time on average	-	DOUBLE	AVG
	maxT0	Max. Startup Time	Maximum startup time	-	DOUBLE	MAX
	maxT1	Max. App Pre-load Time	Maximum app pre-load time	-	DOUBLE	MAX
	maxT2	Max. App Load Time	Maximum app load time	-	DOUBLE	MAX
	maxT3	Max. View Load Time	Maximum view load time	-	DOUBLE	MAX
	maxT4	Other Time (Max.)	Other time at most	-	DOUBLE	MAX