摘要:运行时动态WCET估计

Proceedings of the 8th ACM/IEEE Conference on Internet of Things Design and Implementation Pub Date : 2023-05-09 DOI:10.1145/3576842.3589168

Lia Cagnizi, F. Reghenzani, W. Fornaciari

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引用次数: 0

摘要

为了保证实时物联网设备的时间约束，工程师需要估计最坏情况下的执行时间。这样的估计总是非常悲观，并且代表了一种在实践中几乎从未发生过的情况。在这张海报中，我们提出了一种新颖的基于编译器的方法，该方法使任务在运行时通知操作系统，当采取非最坏情况的分支时。然后利用产生的空闲来做出更好的调度决策。

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Poster Abstract: Run-time Dynamic WCET Estimation

To guarantee the timing constraints of real-time IoT devices, engineers need to estimate the Worst-Case Execution Time. Such estimation is always very pessimistic and represents a condition that almost never occurs in practice. In this poster, we present a novel compiler-based approach that instruments the tasks to inform, at run-time, the operating system when non-worst-case branches are taken. The generated slack is then used to take better scheduling decisions.

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Proceedings of the 8th ACM/IEEE Conference on Internet of Things Design and Implementation

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