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Combining Dynamic and Static Scheduling in Hard Real-Time Systems


Publication Type:

Report - MRTC






We present a method to calculate response times for dynamically scheduled tasks that execute ``in the background of a static cyclic scheduled functions. The method will allow hard real-time systems designers to use both static cyclic scheduling and dynamic (fixed priority) scheduling within one system, thus significantly simplifying the design tradeoff of which scheduling paradigm to use. In a case study we show how the method can be used to guarantee timeliness of functions moved from a static schedule to dynamic scheduled tasks, thus saving computing resources and allowing more functions to be added to the system.


author = {Jukka M{\"a}ki-Turja and Mikael Sj{\"o}din},
title = {Combining Dynamic and Static Scheduling in Hard Real-Time Systems},
number = {ISSN 1404-3041 ISRN MDH-MRTC-71/2002-1-SE},
month = {October},
year = {2002},
publisher = {MRTC},
url = {}