NDLI: Allocation and scheduling of real-time periodic tasks with relative timing constraints

Content Provider	IEEE Xplore Digital Library
Author	Sheng-Tzong Cheng Agrawala, A.K.
Copyright Year	1995
Description	Author affiliation: Inst. of Comput. Sci. & Inf. Eng., Nat. Dong Hwa Univ., Hua Lien, Taiwan (Sheng-Tzong Cheng)
Abstract	Allocation problem has always been one of the fundamental issues of building the applications in real-time computing systems. For real-time applications, the allocation problem should directly address the issues of task and communication scheduling. In this context, the allocation of tasks has to fully utilize the available processors and the scheduling of tasks has to meet the specified timing constraints. Clearly, the execution of tasks under the allocation and schedule has to satisfy the precedence, resources, and other synchronization constraints among them. Recently, the timing requirements of the real-time systems emerge that the relative timing constraints are imposed on the consecutive executions of each task and the inter-task temporal relationships are specified across task periods. In this paper we consider the allocation and scheduling problem of the periodic tasks with such timing requirements. Given a set of periodic tasks, we consider the least common multiple (LCM) of the task periods. Each task is extended to several instances within the LCM. The scheduling window for each task instance is derived to satisfy the timing constraints. We develop a simulated annealing algorithm as the overall control algorithm. An example problem of the sanitized version of the Boeing 777 Aircraft Information Management System is solved by the algorithm. Experimental results show that the algorithm solves the problem in a reasonable time complexity.
Starting Page	210
Ending Page	217
File Size	853106
Page Count	8
File Format	PDF
ISBN	0818671068
DOI	10.1109/RTCSA.1995.528774
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1995-10-25
Publisher Place	Japan
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Timing Processor scheduling Application software Real time systems Simulated annealing Computer science Aircraft Information management Scheduling algorithm Context
Content Type	Text
Resource Type	Article

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