Limited Preemptive Scheduling

Chapter
Part of the Real-Time Systems Series book series (RTSS, volume 24)

Abstract

The question whether preemptive systems are better than non-preemptive systems has been debated for a long time, but only partial answers have been provided in the realtime literature and some issues still remain open to discussion. In fact, each approach has advantages and disadvantages, and no one dominates the other when both predictability and efficiency have to be taken into account in the system design. This chapter presents and compares some existing approaches for reducing preemptions and describes an efficient method for minimizing preemption costs by removing unnecessary preemptions while preserving system schedulability.

Keywords

Dispatch 

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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  1. 1.RETIS LabScuola Superiore Sant’AnnaPisaItaly

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