Standby and suspend on memory

发布时间:2014-10-22 20:00:05编辑:www.fx114.net 分享查询网我要评论
本篇文章主要介绍了"Standby and suspend on memory",主要涉及到Standby and suspend on memory方面的内容,对于Standby and suspend on memory感兴趣的同学可以参考一下。

http://www.stlinux.com/advanced/power-management/features/standby http://www.stlinux.com/advanced/power-management/features CPU frequency scalingStandby and suspend on memorySleep on idleDynamic tickHibernation on media The Linux power management subsystem shows a unified sysfs interface to userspace.The interface exists in /sys/power/ directory. The file: /sys/power/state controls the system power state.A reading from this file, will return what states are supported, which are hard-coded to: standby (Power-On Suspend),mem (Power-On Suspend-to-RAM)disk (Power-Off Suspend-to-Disk) To add the standby and suspend on memory support in the kernel it is necessary to enable: Power management option ---> Power management support Power management option ---> Suspend to RAM and standby To enter in standby type on the available target: target# echo -n standby > /sys/pm/state To enter in suspend on memory type on the available target: target# echo -n mem > /sys/pm/state Bibliography Linux Symposium 2002: The Linux Kernel Device ModelLinux Symposium 2003: Linux Kernel Power ManagementLinux Symposium 2005: The sysfs FilesystemLinux Symposium 2008: Suspend-to-RAM in LinuxLinux Kernel Weekly: A new suspend/hibernate infrastructure


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