Host metricsedit

CPU Usage
Average of system.cpu.user.pct added to the average of system.cpu.system.pct divided by system.cpu.cores
Memory Usage
Average of system.memory.actual.used.pct
Load
Average of system.load.5
Inbound Traffic
Derivative of the maximum of system.network.in.bytes scaled to a 1 second rate
Outbound Traffic
Derivative of the maximum of system.network.out.bytes scaled to a 1 second rate
Log Rate
Derivative of the cumulative sum of the document count scaled to a 1 second rate. This metric relies on the same indices as the logs.

For information about which required fields the Metrics app uses to display host metrics, see the metrics field reference.