Cyclic executive

Cyclic executive

Execution Models for Embedded Systems

Published in Ivan Cibrario Bertolotti, Tingting Hu, Embedded Software Development, 2017

The cyclic executive execution model is fully described in Reference [16] and supports the execution of a number of periodic tasks. A periodic task, usually denoted as τi, is an activity or action to be performed repeatedly, at constant time intervals that represent the period of the process. The period of task τi is denoted as Ti. The same term, cyclic executive, is also used to denote the program responsible for controlling task execution.

Real-Time Scheduling Based on the Cyclic Executive

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Published in Ivan Cibrario Bertolotti, Gabriele Manduchi, Real-Time Embedded Systems, 2017

Ivan Cibrario Bertolotti, Gabriele Manduchi

The cyclic executive, also known as timeline scheduling or cyclic scheduling, is one of the most ancient, but still widely used, real-time scheduling methods or algorithms. A full description of this scheduling model can be found in Reference [11].

TDCS: a new scheduling framework for real-time multimedia OS

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Published in International Journal of Parallel, Emergent and Distributed Systems, 2020

Wei Hu, Tianao Ma, Yonghao Wang, Fangfang Xu, Joshua Reiss

Cyclic executive scheduling is one of the earliest schemes that is realised in the real-time operating system between the 1970s and 1980s [22], especially for hard RT tasks. When the system is complex, it is regarded as inflexibile and difficult to maintain. The rate monotonic scheduling (RMS) and the earliest deadline first (EDF) were proposed to overcome these difficulties to assign priority dynamically based on the characteristics of tasks. In the case of RMS, the tasks with the shortest period are assigned the highest priority [23–26].

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Execution Models for Embedded Systems

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