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Real-Time Task Scheduling Algorithm using a Multi-Dimensional Methodology for Embedded Real-Time Operating Systems

내장형 실시간 운영체제에서 다차원 기법을 이용한 실시간 태스크 스케줄링 알고리즘

  • 조문행 (충남대학교 컴퓨터공학과) ;
  • 임재석 (충남대학교 컴퓨터공학과) ;
  • 이진욱 (충남대학교 컴퓨터공학과) ;
  • 김주만 (부산대학교 바이오정보전자공학과) ;
  • 이철훈 (충남대학교 컴퓨터공학과)
  • Published : 2010.01.28

Abstract

In recent years, embedded systems such as cellular phones, Portable Multimedia Player, intelligent appliance, automobile engine control are reshaping the way people live, work, and play. Thereby, services application to guarantee various requirements of users become increasingly sophisticated and complicated, such embedded computing platforms use real-time operating systems (RTOSs) with time determinism. These RTOSs must not only provide predictable services but must also be efficient and small in size. Kernel services should also be deterministic by specifying how long each service call will take to execute. Having this information allows the application designers to better plan their real-time application software so as not to miss the deadline of each task. In this paper, we present the complete generalized real-time scheduling algorithm using multi-dimensional methodology to determine the highest priority in the ready list with 2r levels of priorities in a constant time without additional memory overhead.

Keywords

Embedded Systems;Real-Time Operating Systems;Real-Time Scheduling Algorithm;Determinism

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