吉林大学学报(工学版) ›› 2020, Vol. 50 ›› Issue (5): 1802-1808.doi: 10.13229/j.cnki.jdxbgxb20190405

• 计算机科学与技术 • 上一篇    

一种考虑可靠性的常带宽服务器低功耗调度算法

吴昊天1,2(),郭锐锋1,2(),彭阿珍1,2,王品1,3   

  1. 1.中国科学院大学, 北京 100049
    2.中国科学院 沈阳计算技术研究所, 沈阳 110168
    3.沈阳中科数控技术股份有限公司，沈阳 110168
  • 收稿日期:2019-04-29 出版日期:2020-09-01 发布日期:2020-09-16
  • 通讯作者: 郭锐锋 E-mail:wuhaotian@sict.ac.cn;grf@sict.ac.cn
  • 作者简介:吴昊天（1992-），男，博士研究生.研究方向：实时系统.E-mail:wuhaotian@sict.ac.cn
  • 基金资助:
    国家科技重大专项项目(2018ZX04035001)

A low power scheduling algorithm based on constant bandwidth server considering reliability

Hao-tian WU1,2(),Rui-feng GUO1,2(),A-zhen PENG1,2,Pin WANG1,3   

  1. 1.University of Chinese Academy of Sciences, Beijing 100049, China
    2.Shenyang Institute of Computing Technology, Chinese Academy of Sciences, Shenyang 110168, China
    3.Shenyang High-precision CNC Intelligent Technology Co. , Ltd. , Shenyang 110168, China
  • Received:2019-04-29 Online:2020-09-01 Published:2020-09-16
  • Contact: Rui-feng GUO E-mail:wuhaotian@sict.ac.cn;grf@sict.ac.cn

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摘要：

针对混合任务模型，使用常带宽服务器(CBS)，采用备份的策略，在保证系统可靠性的基础上最小化能耗，提出一种实时系统调度算法RLPMABC。该算法在调度开始前根据利用率选择被保护的周期任务，在运行中利用可用空闲时间来创建备份任务和电压缩放，实现了低功耗与可靠性之间的协同优化。实验结果表明:相比现有算法，本文算法具备高效的节能效果和更高的可靠性。

关键词: 计算机系统结构, 实时系统, 动态电压频率调节, 可靠性, 混合任务

Abstract:

Based on Constant Bandwidth Server(CBS), a real-time scheduling algorithm, named Reliability and Low Power Mixed-task Algorithm Based on CBS(RLPMABC), is proposed for mixing tasks to minimize energy consumption while ensuring system reliability. The algorithm selects protected periodic tasks according to utilization before scheduling, and creates backup tasks and voltage scaling with available idle time during operation, realizing the collaborative optimization between low power consumption and reliability. Experimental results show that the proposed algorithm has higher efficient energy saving effect and higher reliability than the existing algorithm.

Key words: computer architecture, real-time system, dynamic voltage and frequency scaling, reliability, mixed tasks

中图分类号: 

  • TP316

图1

算法调度实例"

图2

能耗情况对比"

图3

平均出错率情况对比"

图4

归一化能耗与非周期任务平均响应时间乘积情况对比"

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