Counters for System Performance

The following table shows the name, collection level, categories, and values for counters that measure system performance.

The VirtualCenter statistics level is a setting that controls reporting of metrics. Higher settings increase the amount of data collected and can impact performance.

Level 1 collects resource use averages (but not for devices), uptime, heartbeat, and data for DRS (Distributed Resource Scheduler).
Level 2 also includes usage summation and rollup types for the items above.
Level 3 also collects device metrics in all the categories above.
Level 4 also includes maximum and minimum rollup types.

Counter names in orange appear in the VI Client or other GUI.

GROUP NAME: sys

Counter Name	VC Stats Level	Attribute	Value
uptime Uptime	1	description	Time elapsed since last system startup.
		unit	seconds
		stat type	absolute
		rollup type	summation
		entity	host and virtual machine
resourceCpuUsage Resource CPU Usage	avg: 3 min: 4 max: 4	description	Resource CPU usage. CPU use by a resource such as console or helper application.
		unit	MHz
		stat type	rate
		rollup type	average, minimum, maximum
		entity	host and virtual machine
heartbeat Heartbeat	1	description	Number of heartbeats from the virtual machine during the performance interval.
		unit	number
		stat type	delta
		rollup type	summation
		entity	host and virtual machine