Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Periodic and Real-Time Aperiodic Task Scheduling Algorithm based on Topological Sort and Residual Time

위상 정렬과 여유 시간 기반 주기 및 실시간 비주기 태스크 스케줄링 알고리즘

  • 김시완 (강원대학교 전자통신공학과) ;
  • 박홍성 (강원대학교 전자통신공학과)
  • Received : 2011.10.12
  • Accepted : 2012.03.08
  • Published : 2012.04.01
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Abstract

Real-time systems perform periodic tasks and real-time aperiodic tasks such as alarm processing. Especially the periodic tasks included in control systems such as robots have precedence relationships among them. This paper proposes a new scheduling algorithm based on topological sort and residual time. The precedence relationships among periodic tasks are translated to the priorities of the tasks using topological sort algorithm. During the execution of the system the proposed scheduling algorithm decides on whether or not a newly arrived real-time aperiodic task is accepted based on residual time whenever the aperiodic task such as alarm is arrived. The proposed algorithm is validated using examples.

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References

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