Sensitivity Analysis of Real-Time Task Sets
Sensitivity Analysis of Real-Time Task Sets
复制标题
实时任务集的敏感性分析
DOI：
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发表时间：
1997
期刊：
影响因子：
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通讯作者：
A. Burns
中科院分区：
文献类型：
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作者：
S. Punnekkat;Robert I. Davis;A. Burns
尽管可调度性分析已经成熟到可以分析现实系统，但对于设计者而言仍然缺乏灵活性。可行性测试通常很少或根本没有提供实现可行系统所需的任务计时特性变化的指示，也没有提供任何指示在不导致错过最后期限的情况下任务的最坏情况执行时间可以增加到什么程度（在可行系统的情况下）。然而，在实践中，了解系统可行性对任务计时特性的变化有多敏感是有用的。我们提供了一种对任务集进行敏感性分析的通用方法，它可以帮助系统开发人员将更改合并到系统中，同时确保可调度性保证保持不变。
Though schedulability analysis has matured to the point where it is now possible to analyse realistic systems, there is still a lack of flexibility as far as the designer is concerned. Feasibility tests often provide little or no indication of the changes in task timing characteristics required to achieve a feasible system, nor any indication of the extent to which the worst case execution times of tasks may be increased without causing deadlines to be missed (in the case of a feasible system). In practice, however, it is useful to know how sensitive system feasibility is to changes in task timing characteristics. We give a general approach to the sensitivity analysis of task sets, which aids system developers in incorporating changes to the system whilst ensuring that the schedulability guarantees remain intact.