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软实时系统下动态电压/频率调节算法设计 被引量：1

Design of DVFS Algorithm in Soft Real-Time Systems
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摘要 基于实时DVFS模型,提出满足软实时性约束的DVFS算法SRT-DVFS.该算法利用软实时系统在给定延迟率下允许任务延迟的特点,在EDF算法基础上实现软实时DVFS调度,克服了在软实时系统里直接使用硬实时DVFS算法效率低的缺点.通过模拟实验证明该算法能够满足系统软实时要求.实验结果表明,该算法比LEDF算法节省10%的能量消耗. A new DVFS algorithm meeting the constraints of soft real-time is proposed, based on the real-time DVFS model. Based on EDF algorithm, DVFS scheduling for soft real-time is implemented by taking advantage of features that task delay is accepted when predefined delay ratio is satisfied in the soft real-time system. Shortcoming of low- efficiency caused by the use of hard-time DVFS algorithms in soft real-time system is thus avoided. It is shown that the algorithm can satisfy with the requirements of soft real-time through simulation experiment. Experimental results have shown that SRT-DVFS saves 10% in energy consumption compared to LEDF.
作者 钟伟军 刘明业
机构地区 北京理工大学信息科学技术学院计算机科学工程系
出处 《北京理工大学学报》 EI CAS CSCD 北大核心 2005年第10期868-871,共4页 Transactions of Beijing Institute of Technology
基金 国家部委基础科研项目(J1400B006)
关键词 嵌入式系统 软实时 动态电压/频率调节 embedded system soft real-time dynamic voltage/frequency scaling
分类号 TP368.1 [自动化与计算机技术—计算机系统结构]
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参考文献10

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二级参考文献4

同被引文献4

  • 1王华勇,陈渝,戴一奇.适用于不确定环境中的DVS软实时调度算法[J].计算机工程,2006,32(11):4-6. 被引量：2
  • 2QIU M, JIA Z, XUE C, et al. Voltage assignment with guaranteed probability satisfying timing constraint for real-time multiproceesor DSP [J]. Journal of VLSI Signal Processing Systems, 2007, 46(1) : 55 - 73.
  • 3HUA S, QU G. Energy-efficient dual-voltage soft real-time system with ( m, k) -firm deadline guarantee [C]//International Conference on Compilers, Architecture and Synthesis of Embedded Systems (CASES). Washington: ACM Press, 2004:116 - 123.
  • 4HUA S, QU G, SHUVRA S B. Energy-efficient embedded software implementation on multiprocessor system-on-chip with multiple voltages [J]. ACM Transactions on Embedded Computing Systems, 2006, 5(2) : 321 - 341.

引证文献1

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北京理工大学学报
2005年 第10期

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