Revisiting Fixed Priority Techniques

  • Nasro Min-Allah
  • Wang Yong-Ji
  • Xing Jian-Sheng
  • Junxiang Liu
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4808)


Discrete scheduling is preferred over continuous scheduling for preemptive scheduling problems, however, classical continuous schedulability tests can not work effectively with discrete scheduling. This area of integrating discrete scheduling with continuous schedulability tests remains unexplored. Two contributions are made in this paper; firstly, an empty-slot method is introduced and extended to discrete schedulability analysis and secondly, an efficient exact feasibility test is proposed that has lower complexity in contrast to current feasibility tests in terms of reducing the number of scheduling points, where task feasibility is analyzed.


Real-Time Systems Fixed priority Scheduling Discrete Scheduling Rate Monotonic Analysis Time Demand Approach 


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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Nasro Min-Allah
    • 1
    • 2
    • 3
  • Wang Yong-Ji
    • 3
  • Xing Jian-Sheng
    • 1
    • 3
  • Junxiang Liu
    • 3
  1. 1.Graduate University, Chinese Academy of Sciences, Beijing 100039P.R. China
  2. 2.Department of Computer Sciences, COMSATS University, 44000Pakistan
  3. 3.Institute of Software, Chinese Academy of Sciences, Beijing 100080P.R. China

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