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LCTRTS
2000
Springer

Approximation of Worst-Case Execution Time for Preemptive Multitasking Systems

8 years 8 months ago
Approximation of Worst-Case Execution Time for Preemptive Multitasking Systems
The control system of many complex mechatronic products requires for each task the Worst Case Execution Time (WCET), which is needed for the scheduler's admission tests and subsequently limits a task's execution time during operation. If a task exceeds the WCET, this situation is detected and either a handler is invoked or control is transferred to a human operator. Such control systems usually support preemptive multitasking, and if an object-oriented programming language (e.g., Java, C++, Oberon) is used, then the system may also provide dynamic loading and unloading of software components (modules). Only modern, state-of-the art microprocessors can provide the necessary compute cycles, but this combination of features (preemption, dynamic un/loading of modules, advanced processors) creates unique challenges when estimating the WCET. Preemption makes it difficult to take the state of the caches and pipelines into account when determining the WCET, yet for modern processors,...
Matteo Corti, Roberto Brega, Thomas R. Gross
Added 25 Aug 2010
Updated 25 Aug 2010
Type Conference
Year 2000
Where LCTRTS
Authors Matteo Corti, Roberto Brega, Thomas R. Gross
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