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The Global Feasibility and Schedulability of General Task Models on Multiprocessor Platforms

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2 Author(s)
Fisher, N. ; Univ. of North Carolina at Chapel Hill, Chapel Hill ; Baruah, S.

Feasibility analysis determines (prior to system execution-time) whether a specified collection of hard-real-time jobs executed on a processing platform can meet all deadlines. In this paper, we derive near-optimal sufficient tests for determining whether a given collection of jobs can feasibly meet all deadlines upon a specified multiprocessor platform assuming job migration is permitted. These tests are general enough to be applied even when the collection of jobs is incompletely specified. We discuss the applicability of these tests to the scheduling of collections of jobs that are generated by systems of recurrent real-time tasks. We also show that our feasibility conditions may be used to obtain global-EDF schedulability conditions.

Published in:

Real-Time Systems, 2007. ECRTS '07. 19th Euromicro Conference on

Date of Conference:

4-6 July 2007