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Title
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COBRA-HPA : a block generating tool to perform hybrid program analysis
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Author
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Abstract
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| The Worst-Case Execution Time (WCET) of a task is an important value in real-time systems. This metric is used by the scheduler in order to schedule all tasks before their deadlines. However, the code and hardware architecture have a significant impact on the execution time and thus the WCET. Therefore, different analysis methodologies exist to determine the WCET, each with their own advantages and/or disadvantages. In this paper, a hybrid approach is proposed which combines the strengths of two common analysis techniques. The two-layer hybrid model splits the code of tasks into so-called basic blocks. The WCET can be determined by performing execution time measurements on each block and statically combining those results. The COBRA-HPA framework presented in this paper is developed to facilitate the creation of hybrid block models and automate the measurements/analysis process. Additionally, an elaborated discussion on the implementation and performance of the framework is given. In conclusion, the results of the COBRA-HPA framework show a significant reduction in analysis effort while keeping sound WCET predictions for the hybrid method compared to the static and measurement-based approach. |
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Language
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English
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Source (journal)
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International journal of grid and utility computing
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Publication
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2019
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ISSN
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1741-847X
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DOI
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10.1504/IJGUC.2019.098211
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Volume/pages
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10
:2
(2019)
, p. 105-118
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ISI
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000460565800002
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Full text (Publisher's DOI)
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Full text (open access)
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