# Performance Counters for CPU Usage

This table contains the values for each category of the counters that measure CPU performance.

### GROUP NAME: cpu

Counter Name | Category | Value
--- | --- | ---
usage
unit | Percentage, precision to 1/100 percentage point. 1 = 0.01%. A value between 0 and 10000.
description | CPU usage as a percentage over the interval of collection.
statistic type | rate
rollup type | average, minimum, maximum
entity | host, virtual machine
usagemhz
unit | MHz
description | CPU usage in MHz over the interval of collection.
statistic type | rate
rollup type | average, minimum, maximum
entity | host, virtual machine, compute resources and resource pools
system
unit | millisecond
description | CPU time spent on system processes.
statistic type | delta
rollup type | summation
entity | virtual machine, device instance only
wait
unit | millisecond
description | CPU time spent on wait state.
statistic type | delta
rollup type | summation
entity | virtual machine, device instance only
ready
unit | millisecond
description | CPU time spent on ready state.
statistic type | delta
rollup type | summation
entity | virtual machine, device instance only
extra
unit | millisecond
description | CPU time that is extra.
statistic type | delta
rollup type | summation
entity | virtual machine, device instance only
used
unit | millisecond
description | CPU time that is used.
statistic type | delta
rollup type | summation
entity | virtual machine, device instance only
guaranteed
unit | millisecond
description | CPU time that is guaranteed for the virtual machine
statistic type | delta
rollup type | summation
entity | virtual machine, device instance only
reservedCapacity
unit | MHz
description | CPU reserved capacity
statistic type | absolute
rollup type | average
entity | host, virtual machine, resource pools