转自:http://blog.chinaunix.net/uid-24517893-id-254740.html Linux Power Managment 谨以此文纪念过往的岁月 一．前言 在这个对节能要求越来越严格的年代,对设备的电源管理就显的很重要的了,尤其对于可移动设备,在电源有限的情况下,续航能力就显的很重要的.在本文中将介绍linux是如何对设备电源进行管理的. 二．睡眠 Linux的电源管理的主要几个文件集中在/kernel/power/main.c和/driver/base/po…
Advanced Configuration and Power Management Interface(ACPI)是由Intel,Microsoft等厂家订的一套Spec,规范了OS,APP对于电源的管理.ACPI涉及很广,这里仅涉及一些System Power Management, Device Power Management. System PM:S0: working modeS1: CPU停止工作, CPU,RAM继续供电,cache flush到Ram,Device若无必要则处…
[root@bigdata-server-02 /]# ps --help all Usage: ps [options] Basic options: -A, -e all processes -a all with tty, except session leaders a all with tty, including other users -d all except session leaders -N, --deselect negate selection r only runni…
BACKGROUND INFORMATION Embodiments of the present invention are directed to optical links and, more particularly, to optical links which may save power when the optical link is unplugged and maintain eye safety standards. Most optical links to date a…
A method for operating a memory module device. The method can include transferring a chip select, command, and address information from a host memory controller. The host memory controller can be coupled to a memory interface device, which can be cou…
0.ABSTRACT (1)non-volatile memory——low standby power DRAM——high performance and better active power (2)we: present a runtime-adaptive method of DRAM decay——reduce DRAM refresh energy (largestandby power due to refresh) present two methods——DRAM bypas…
