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PROCESSOR_POWER_POLICY_INFO structure (winnt.h)

  • Article

Contains information about processor C-state policy settings. This structure is part of the PROCESSOR_POWER_POLICY structure.

Syntax

typedef struct _PROCESSOR_POWER_POLICY_INFO {
  DWORD TimeCheck;
  DWORD DemoteLimit;
  DWORD PromoteLimit;
  BYTE  DemotePercent;
  BYTE  PromotePercent;
  BYTE  Spare[2];
  DWORD AllowDemotion : 1;
  DWORD AllowPromotion : 1;
  DWORD Reserved : 30;
} PROCESSOR_POWER_POLICY_INFO, *PPROCESSOR_POWER_POLICY_INFO;

Members

TimeCheck

The time that must expire before promotion or demotion is considered, in microseconds.

DemoteLimit

The minimum amount of time that must be spent in the idle loop to avoid demotion, in microseconds.

PromoteLimit

The time that must be exceeded to cause promotion to a deeper idle state, in microseconds.

DemotePercent

The value that scales the threshold at which the power policy manager decreases the performance of the processor, expressed as a percentage.

PromotePercent

The value that scales the threshold at which the power policy manager increases the performance of the processor, expressed as a percentage.

Spare[2]

Reserved.

AllowDemotion

When set, allows the kernel power policy manager to demote from the current state.

AllowPromotion

When set, allows the kernel power policy manager to promote from the current state.

Reserved

Reserved.

Requirements

Requirement Value
Minimum supported client Windows XP [desktop apps only]
Minimum supported server Windows Server 2003 [desktop apps only]
Header winnt.h (include Windows.h)

See also

PROCESSOR_POWER_POLICY