P-States： Performance States，能效状态。 T-States：Throttling States。 S-States：Sleeping States，睡眠状态。 G-States：Global States，全局状态。 C-States：CPU States，处理器状态。 P-States指CPU根据当前运算负载，调整运行的频率。如2.6GHz的CPU，在系统空闲时，可以运行在1.8GHz频率。
READ MORE »Posts in category 电源管理
[转]Linux Power Management Architecture
介绍Linux内核电源管理框架，非常不错的材料。 来源：http://home.dei.polimi.it/bellasi/doku.php?id=teaching:2010:embeddedsystems1 点击下载：Linux Power Management Architecture A review on Linux PM frameworks
READ MORE »[转]Intel CPU Power Management Overview
Intel处理器电源管理概述PPT，推荐阅读。 •Introduction • Overview of all power states Ø Global States Ø Device States Ø CPU States Ø PCIe Link PM States Ø Sleep States Ø AMT States 点击下载
READ MORE »[转]CPU C-States Power Saving Modes
![[转]CPU C-States Power Saving Modes](http://ilinuxkernel.com/wp-content/uploads/2011/06/061811_1646_CPUCStates11.gif)
Everything You Need to Know About the CPU C-States Power Saving Modes http://www.hardwaresecrets.com/article/Everything-You-Need-to-Know-About-the-CPU-C-States-Power-Saving-Modes/611/1 Introduction In order to save energy when the CPU is idle, the CPU can be commanded to enter a low-power mode. Each CPU has several power modes and they are collectively called “C-states” or “C-modes”. In this tutorial we will […]
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