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Jansen, P.G. and Mullender, S.J. and Havinga, P.J.M. and Scholten, J.
(2003)
Lightweight EDF Scheduling with Deadline Inheritance.
Technical Report TR-CTIT-03-23,
Centre for Telematics and Information Technology University of Twente, Enschede.
ISSN 1381-3625
Full text available as:
AbstractEDFI is a lightweight real-time scheduling protocol that combines EDF with deadline inheritance over shared resources. We will show that EDFI is flexible during a tasks admission control, efficient with scheduling and dispatching, and straightforward in feasibility analysis. The application programmer only needs to specify a tasks timing constraints (deadline, period, runtime) and resource needs, after which EDFI can execute admission control, scheduling, dispatching and resource synchronisation automatically. EDFI avoids gratuitous task switching and its programming overhead as well as runtime overhead is very low, which makes it ideal for lightweight and featherweight kernels. We will illustrate the elegance of the underlying theory and we will shortly discuss the implementation of EDFI in three different operating systems.
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