| 基于线性预测的移动终端LPDVFS策略 |
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| 引用本文： | 张立,袁小龙,韩银和.基于线性预测的移动终端LPDVFS策略[J].计算机工程,2012,38(12):239-242. |
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| 作者姓名： | 张立 袁小龙 韩银和 |
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| 作者单位： | 1. 北京交通大学电子信息工程学院,北京,100044
2. 中国科学院计算技术研究所计算机系统结构重点实验室,北京,100190 |
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| 基金项目： | 国家自然科学基金资助项目，中央高校基本科研业务费专项基金资助项目 |
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| 摘 要： | 针对以Linux为内核的移动操作系统，提出一种细粒度的DVFS策略LPDVFS。该策略基于历史数据，使用线性预测的方法，指导电压频率调整方向和幅度。线性预测中的参数通过回归方法确定。实验结果表明，LPDVFS策略相比Linux内核默认使用的粗粒度调频策略，能降低系统13.55%的功耗，延长移动终端的续航时间。
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| 关 键 词： | 低功耗技术 动态电压频率 线性预测 细粒度 benchmark程序 |
| 收稿时间： | 2011-08-25 |
LPDVFS Strategy of Mobile Terminal Based on Linear Prediction |
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| ZHANG Li
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YUAN Xiao-long
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HAN Yin-he.LPDVFS Strategy of Mobile Terminal Based on Linear Prediction[J].Computer Engineering,2012,38(12):239-242. |
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| Authors: | ZHANG Li YUAN Xiao-long HAN Yin-he |
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| Affiliation: | 1.School of Electronic and Information Engineering,Beijing Jiaotong University,Beijing 100044,China;2.Key Laboratory of Computer System and Architecture,Institute of Computing Technology,Chinese Academy of Sciences,Beijing 100190,China) |
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| Abstract: | This paper presents an optimized and fine grained strategy LPDVFS(DVFS based on Linear Prediction) aiming at mobile operating systems based on Linux kernel.This strategy uses the linear prediction mechanism based on historical data to adjust the range and orientation of voltage and frequency.The parameters are obtained through regression method.Experimental results show that the optimized LPDVFS strategy can save 13.55% energy consumption compared with the default coarse grained frequency scaling strategy.The LPDVFS strategy can reach better power saving effect and enhance the cruising ability of mobile terminals. |
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| Keywords: | low energy consumption technology dynamic voltage frequency linear prediction fine grained benchmark program |
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