基于时间预算的汽车系统任务模型构建

Ernest Wozniak, C. Mraidha, S. Gérard
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引用次数: 1

摘要

时间预算表示对系统功能执行时间的早期估计。它们是根据工程师的经验分配的,并作为早期性能或可调度性分析的输入。如果计算的系统功能的最坏情况执行时间超过相应的时间预算,则此可调度性分析测试可能变得无关紧要。本文提出了一种基于系统功能在操作系统任务间的重新分配的解决方案,以保持系统的可调度性。它适用于具有代表性的大量系统,特别是汽车系统的线性计算模型。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Guided task model construction for automotive systems based on time budgets
Time budgets represent early estimates of execution times of system functions. They are assigned based on engineers experience and serve as an input for the early stage performance or schedulability analysis. This schedulability analysis test might become irrelevant if the computed worst-case execution times of a system functions exceed corresponding time budgets. This paper presents a solution based on the reallocation of system functions among OS tasks that preserves schedulability of the system. It is adapted to the linear computation model which is representative of a large number of systems, inter alia automotive systems.
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