基于阈值预测的Linux系统休眠态低功耗策略  

Low Power Strategy Based on Threshold Prediction for Linux Sleep Mode

作　　者：尚维来[1] 武建平[2] 张黎明[2] 

机构地区：[1]南京化工职业技术学院,南京210048 [2]东南大学国家专用集成电路系统工程技术研究中心,南京210096

出　　处：《微电子学》2013年第1期85-89,93,共6页Microelectronics

摘　　要：基于自主设计的嵌入式低功耗硬件平台,深入分析了Linux系统休眠态的功耗管理技术。在分析Linux休眠机制下高级电源管理(APM,Advanced Power Management)的基础上,设计并实现了系统休眠态的驱动层和内核适配层;提出了一种基于阈值预测的系统休眠策略。基于硬件平台的实验结果表明,设计的系统功耗管理技术能够将系统休眠功耗降低到全速运行时的6%,接近硬件平台的理论休眠功耗极限。Based on our self-designed embedded low-power hardware platform,sleep mode of Linux system and power management techniques in Linux sleep mode were discussed in detail.Based on the analysis of advanced power management（APM） for Linux sleep mechanism,driver and kernel-adaptive levels were designed and implemented,and a system sleep strategy based on threshold prediction was presented.Experimental results based on our physical hardware platform indicated that,by using the proposed optimization approach,system power in sleep mode could be reduced to 6% of the running mode power,which is close to the theoretical limitation of power level in sleep mode.

关 键 词：LINUX 阈值预测 低功耗策略 系统休眠 

分 类 号：TP302[自动化与计算机技术—计算机系统结构]