| 交互式系统下基于任务重要性的DVFS技术 |
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| 引用本文： | 刘腾福,朱宗卫,吕良,孙贝磊,周学海,李曦. 交互式系统下基于任务重要性的DVFS技术[J]. 计算机系统应用, 2014, 23(11): 28-33 |
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| 作者姓名： | 刘腾福 朱宗卫 吕良 孙贝磊 周学海 李曦 |
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| 作者单位： | 1. 中国科学技术大学 计算机科学与技术学院，合肥 230026; 中国科学技术大学 苏州研究院，苏州 215028
2. 中国科学技术大学 苏州研究院,苏州,215028 |
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| 基金项目： | 国家自然基金(61272131,61202053);江苏省自然科学基金(SBK201240198);江苏省产学研前瞻性联合研究项目(BY2009128) |
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| 摘 要： | 动态电压频率调节技术(DVFS)是从软件层面进行系统功耗管理的重要技术。本论文针对交互式系统的特点，首先分析了当前使用的 DVFS 策略的不足之处，然后提出并实现了一种适用于交互式系统的 DVFS 策略。该策略在保障用户体验的前提下对移动设备进行功耗优化。实验结果证明，对于大多数应用能达到10%以上的功耗优化效果，部分应用最高有超过30%的功耗降低。
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| 关 键 词： | 交互式系统 DVFS 功耗优化 行为分析 Android |
| 收稿时间： | 2014-03-18 |
| 修稿时间： | 2014-05-16 |
Load Importance-Based DVFS Scheme for Interactive Systems |
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| LIU Teng-Fu,ZHU Zong-Wei,LV Liang,SUN Bei-Lei,ZHOU Xue-Hai and LI Xi. Load Importance-Based DVFS Scheme for Interactive Systems[J]. Computer Systems& Applications, 2014, 23(11): 28-33 |
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| Authors: | LIU Teng-Fu ZHU Zong-Wei LV Liang SUN Bei-Lei ZHOU Xue-Hai LI Xi |
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| Affiliation: | Institute of Computer Science and Technology, University of Science and Technology of China, Hefei 230026, China;Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215028, China;Institute of Computer Science and Technology, University of Science and Technology of China, Hefei 230026, China;Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215028, China;Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215028, China;Institute of Computer Science and Technology, University of Science and Technology of China, Hefei 230026, China;Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215028, China;Institute of Computer Science and Technology, University of Science and Technology of China, Hefei 230026, China;Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215028, China;Institute of Computer Science and Technology, University of Science and Technology of China, Hefei 230026, China;Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou 215028, China |
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| Abstract: | Dynamic voltage and frequency scaling technique (DVFS) has been introduced to manage system power at software level. In this paper, we firstly discussed the disadvantages of commercial CPU frequency governors on interactive systems. Then, we proposed and implemented a new DVFS scheme aimed at Interactive Systems. The scheme is designed to save system power based on the premise that user experience must not be declined. Experimental results demonstrated that most application can save more than ten percent power compared with the original Ondemand DVFS governor, and even more than thirty percent for some other applications. |
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| Keywords: | interactive system DVFS power task behavior Android |
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