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AN EXTENDIBLE APPROACH FOR ANALYZING FIXED PRIORITY HARD REAL-TIME TASKS

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JournalReal-Time Systems
DatePublished - Mar 1994
Issue number2
Volume6
Number of pages19
Pages (from-to)133-151
Original languageEnglish

Abstract

As the real-time computing industry moves away from static cyclic executive-based scheduling towards more flexible process-based scheduling, so it is important for current scheduling analysis techniques to advance and to address more realistic application areas. This paper extends the current analysis associated with static priority pre-emptive based scheduling; in particular it derives analysis for tasks with arbitrary deadlines that may suffer releasejitter due to being dispatched by a tick driven scheduler. We also consider bursty sporadic activities, where tasks arrive sporadically but then execute periodically for some bounded time. The paper illustrates how a window-based analysis technique can be used to find the worst-case response time of a task set, and shows that the technique can be easily extended to cope with realistic and complex task characteristics.

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