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DOI: 10.4230/OASIcs.WCET.2015.1
URN: urn:nbn:de:0030-drops-52517
URL: http://drops.dagstuhl.de/opus/volltexte/2015/5251/
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Cassť, Hugues ; Ozaktas, Haluk ; Rochange, Christine

A Framework to Quantify the Overestimations of Static WCET Analysis

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Abstract

To reduce complexity while computing an upper bound on the worst-case execution time, static WCET analysis performs over-approximations. This feeds the general feeling that static WCET estimations can be far above the real WCET. This feeling is strengthened when these estimations are compared to measured execution times: generally, it is very unlikely to capture the worstcase from observations, then the difference between the highest watermark and the proven WCET upper bound might be considerable. In this paper, we introduce a framework to quantify the possible overestimation on WCET upper bounds obtained by static analysis. The objective is to derive a lower bound on the WCET to complement the upper bound.

BibTeX - Entry

@InProceedings{cass_et_al:OASIcs:2015:5251,
  author =	{Hugues Cass{\'e} and Haluk Ozaktas and Christine Rochange},
  title =	{{A Framework to Quantify the Overestimations of Static WCET Analysis}},
  booktitle =	{15th International Workshop on Worst-Case Execution Time Analysis (WCET 2015)},
  pages =	{1--10},
  series =	{OpenAccess Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-95-8},
  ISSN =	{2190-6807},
  year =	{2015},
  volume =	{47},
  editor =	{Francisco J. Cazorla},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{http://drops.dagstuhl.de/opus/volltexte/2015/5251},
  URN =		{urn:nbn:de:0030-drops-52517},
  doi =		{10.4230/OASIcs.WCET.2015.1},
  annote =	{Keywords: Static WCET analysis, uncertainty, overestimation, cache analysis}
}

Keywords: Static WCET analysis, uncertainty, overestimation, cache analysis
Seminar: 15th International Workshop on Worst-Case Execution Time Analysis (WCET 2015)
Issue Date: 2015
Date of publication: 01.07.2015


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