在实时系统中调度自适应任务

Kai Wang, Tein-Hsiang Lin
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引用次数: 5

摘要

在实时系统中,重复性任务可以被调度为周期任务或自适应任务,以满足其对时间的要求。对于周期性任务,截止日期始终与准备时间间隔一个周期,当前截止日期将成为下一个任务实例的准备时间。而对于自适应任务,截止日期被设置为从前一个任务实例完成的一个周期间隔,并且就绪时间可以在截止日期之前的任何位置设置。周期任务调度在过去得到了广泛的研究。研究了自适应任务的调度问题。本研究的动机是研究具有自适应传感器的雷达系统的资源分配,其中,如果传感器任务被调度为自适应任务,资源将得到更有效的利用
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Scheduling adaptive tasks in real-time systems
In a real-time system, a repetitive task can be scheduled as a periodic task or an adaptive task to meet its timing requirement. For a periodic task, the deadline is always one period interval from the ready time and the current deadline will become the ready time for the next task instance. Whereas for an adaptive task, the deadline is set to one period interval from the completion of the previous task instance and the ready time can be set anywhere before the deadline. Periodic task scheduling has be researched extensively in the past. The authors study the scheduling of adaptive tasks. This study is motivated by the study of resource allocation for a radar system with adaptive sensors, where the resources would be used more efficiently if the sensor tasks are scheduled as adaptive tasks.<>
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