Power management/Processor/ko

This article describes the setup of power management for processors.

CPU 주파수 조절
CPU frequency scaling is a technique whereby the frequency of a processor can be automatically adjusted "on the fly" to conserve power and to reduce the amount of heat generated by the chip.

BIOS
일부 기능은 BIOS에서 켜고 끌 수 있습니다. 다음 기능을 켰는지 확인하십시오:
 * "Processor C1E support"
 * "Enhanced Speedstep (EIST)"

커널
Activate the following kernel options:

이 프로파일에 기반하여 주파수를 바꾸는 역할을 담당하는 정책 설정이 필요합니다:

Ticks
The processor saves the most energy when the processor stays longer in power savings mode, so reduce the amount of ticks that wakes the processor up.

BIOS
Some functions can be enabled or disabled in the BIOS. Check that the following are enabled:
 * "HPET"
 * "Multimedia timer"

커널
Activate the following kernel options:

PowerTOP
PowerTOP is a utility designed to measure, explain and minimize a computer's electrical power consumption.

커널
Please refer to the Kernel section in the PowerTOP article for more information.

프로그램
을 설치하십시오:

사용법
When powertop is ran, it sorts the running processes in order of how often they cause the processor to wake up.

Hprofile
It is possible to change the active CPU governer using a simple command:

Read to learn how to execute this command on startup.

Applications such as do little more than the above but with some interface on top of it. However, having to run certain commands as root depending on the system usage is not efficient for most users. It is better to automate some of the decisions of governing CPU frequency. For instance, when not wired to AC power, most users would like to have the system in a power saving mode.

This is where Hprofile comes into play. Please refer to its article for more information and configuration.