Operating System Power Management (OSPM)
Techopedia explains Operating System Power Management (OSPM)OSPM is primarily designed to work on handheld or portable devices such as laptops and tablets. For OSPM, the entire system is divided into different categories such as the core system and subsystem, each with its own unique power requirements. OSPM works with the System Controller Unit (SCU), a power management unit that directly interfaces with the all the hardware components. OSPM provides different power-operational modes for a system. When implemented with an Advanced Configuration and Power Interface (ACPI), it can switch a system in between power state, performance state and processor state.
OS-Directed Power Management, OS-Level Power Management, Operating System-directed configuration and Power Management
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