Power Capping Settings

Function

On the Power Capping Settings page, you can configure power capping settings for a chassis or a compute node.

If the power capping function is enabled, the system controls the running frequency of the CPU on each specified node when the real-time power reaches the preset limit. In this event, the services and performance of the nodes may be affected.

NOTE:

You need to set and save the power limit for a chassis before setting the power limit for a node.

Table 1 describes the parameters.

**Table 1** Parameter description
Parameter	Description
Real-time chassis power(W)	Specifies the real-time chassis power.
Chassis power capping	Specifies whether to enable the chassis power capping function. Setting method: Click . If the icon changes to , the power capping function is enabled.
Chassis Power Capping Value(W)	Limits the maximum chassis power. Setting rule: The power cap of the chassis must be greater than the sum of the power caps of all compute nodes. NOTE: The setting of the chassis power cap takes effect only when the real-time chassis power is greater than 70% of the chassis power cap.
Component Name	Specifies the slot number of a compute node.
Real-time Power(W)	Specifies the real-time power of a compute node.
Power Capping	Specifies whether to enable the power capping function for a compute node. Setting method: Click . If the icon changes to , the power capping function is enabled.
Power Capping Value(W)	Limits the maximum power of a compute node. Value range: The value range varies according to the compute node model. For details, see the instructions on the WebUI. Setting rule: The value cannot be smaller than the lower limit displayed on the WebUI.