6.0.1

Procedure
1 Browse to the host in the vSphere Web Client navigator.
2 Click the Manage tab and click Settings.
3 Under System, select Advanced System Settings.
4 In the right pane, you can edit the power management parameters that affect the Custom policy.
Power management parameters that affect the Custom policy have descriptions that begin with In
Custom policy. All other power parameters affect all power management policies.
5 Select the parameter and click the Edit button.
NOTE The default values of power management parameters match the Balanced policy.
Parameter Description
Power.UsePStates
Use ACPI P-states to save power when the processor is busy.
Power.MaxCpuLoad
Use P-states to save power on a CPU only when the CPU is busy for less
than the given percentage of real time.
Power.MinFreqPct
Do not use any P-states slower than the given percentage of full CPU
speed.
Power.UseStallCtr
Use a deeper P-state when the processor is frequently stalled waiting for
events such as cache misses.
Power.TimerHz
Controls how many times per second ESXi reevaluates which P-state each
CPU should be in.
Power.UseCStates
Use deep ACPI C-states (C2 or below) when the processor is idle.
Power.CStateMaxLatency
Do not use C-states whose latency is greater than this value.
Power.CStateResidencyCoef
When a CPU becomes idle, choose the deepest C-state whose latency
multiplied by this value is less than the host's prediction of how long the
CPU will remain idle. Larger values make ESXi more conservative about
using deep C-states, while smaller values are more aggressive.
Power.CStatePredictionCoef
A parameter in the ESXi algorithm for predicting how long a CPU that
becomes idle will remain idle. Changing this value is not recommended.
Power.PerfBias
Performance Energy Bias Hint (Intel-only). Sets an MSR on Intel processors
to an Intel-recommended value. Intel recommends 0 for high performance,
6 for balanced, and 15 for low power. Other values are undefined.
6 Click OK.
Chapter 4 Administering CPU Resources
VMware, Inc. 27