A Comparison of Scheduling Mechanisms in commercial Real-Time Operating Systems

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Mir Ashfaque Ali
Dr. S. A. Ladhake


A number of commercial real-time operating system are available. A real-time operating system (RTOS) supports real-time applications and embedded systems. Real-time applications have the requirement to meet task deadlines in addition to the logical correctness of the results. This paper focuses on pre-requisites for an RTOS to be POSIX compliant and discuss task scheduling in RTOSs. We survey the prominent commercial RTOSs and present a comparison of their scheduling properties. We conclude by discussing the results of the comparison and suggest future research directions in task scheduling in real-time operating systems.


Keywords: Task scheduling, real-time operating systems, commercial RTOS, POSIX.


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