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 DRS data.
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.

GROUP NAME: sys

Counter Name	VC Stats Level	Category	Value
uptime	1	unit	seconds
		description	Total time elapsed since last system startup.
		stat type	absolute
		rollup type	summation
		entity	host, virtual machine
resourceCpuUsage	avg: 3 min: 4 max: 4	unit	MHz
		description	Resource CPU usage.
		stat type	rate
		rollup type	average, minimum, maximum
		entity	host, virtual machine
heartbeat	1	unit	number
		description	Number of heartbeats from the virtual machine in the defined interval.
		stat type	delta
		rollup type	summation
		entity	host, virtual machine