计算机应用 ›› 2012, Vol. 32 ›› Issue (02): 573-577.DOI: 10.3724/SP.J.1087.2012.00573

• 典型应用 • 上一篇    下一篇

实时系统中弹性调度策略

杨志邦1,徐成1,周旭2,朱雪庆1   

  1. 1. 湖南大学 信息科学与工程学院,长沙 410082
    2. 嘉兴学院 数学与信息工程学院, 嘉兴 314001
  • 收稿日期:2011-07-27 修回日期:2011-09-22 发布日期:2012-02-23 出版日期:2012-02-01
  • 通讯作者: 周旭
  • 作者简介:杨志邦(1984-),男,湖南邵阳人,博士研究生,CCF会员,主要研究方向:嵌入式系统、任务调度;
    徐成(1962-),男,湖北蕲春人,教授,博士,主要研究方向:嵌入式系统;
    周旭(1983-),女,江苏宿迁人,讲师,硕士,主要研究方向:并行计算、任务调度;
    朱雪庆(1985-),女,湖南张家界人,硕士研究生,主要研究方向:任务调度。
  • 基金资助:
    国家自然科学基金资助项目(60973030);湖南省科研条件创新专项(2010TT1002);嘉兴市科技计划项目(2011AY1003)

Elastic scheduling in real-time systems

YANG Zhi-bang1,XU Cheng1,ZHOU Xu2,ZHU Xue-qing1   

  1. 1. College of Information Science and Engineering, Hunan University, Changsha Hunan 410082, China
    2. College of Mathematics Physics and Information Engineering, Jiaxing University, Jiaxing Zhejiang 314001, China
  • Received:2011-07-27 Revised:2011-09-22 Online:2012-02-23 Published:2012-02-01
  • Contact: ZHOU Xu

摘要: 弹性调度面向负载可变的实时系统,通过动态调整任务属性以满足系统的灵活性要求,是一种高效的任务调度策略。针对弹性调度研究中的成果及问题,概述了弹性调度的研究背景,从任务模型、调度模型以及调度算法三个方面对弹性调度的国内外研究进展进行综述,探讨当前研究中存在的问题,并对弹性调度未来研究工作进行分析和展望。

关键词: 实时系统, 系统性能, 弹性调度, 任务模型, 调度算法

Abstract: Elastic scheduling is designed for real-time systems with variable load. It adjusts the task attributes dynamically to meet the flexibility requirements of system, and it is an effective task scheduling strategy. Concerning the research results and problems of elastic scheduling, an overview of elastic scheduling was given out, and the research progress of the elastic periodic task model, scheduling model and the elastic scheduling algorithm were analyzed. The existing problems in research were investigated, and possible research areas in future were suggested.

Key words: real-time system, system performance, elasticity scheduling, task model, scheduling algorithm

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