Static worst-case execution time analysis tool for embedded operating systems

Abstract

Real-time support of embedded Operating Systems is essential for contemporary embedded systems. In order to achieve supporting real-time property, it is crucial that schedulability analysis for real-time task is finished before implementing the embedded systems. Acquiring Worst-Case Execution Time (WCET) of task is a core part of this schedulability analysis. In this paper, we design and implement WATERk, WCET analysis tool which deliberates on scheduling primitives of system using embedded Linux. WATERk can estimate WCET of both normal application tasks and corresponding primitives which influence the schedulability of embedded systems. Evaluation Results show that WATERk provides more reliable estimation results compared with traditional WCET tools. © 2008 Springer-Verlag Berlin Heidelberg.