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DOI: 10.4230/OASIcs.WCET.2009.2292
URN: urn:nbn:de:0030-drops-22922
URL: http://dagstuhl.sunsite.rwth-aachen.de/volltexte/2009/2292/
Keim, Paul ;
Noyes, Amanda ;
Ferguson, Andrew ;
Neal, Joshua ;
Healy, Christopher
Extending the Path Analysis Technique to Obtain a Soft WCET
Abstract
This paper discusses an efficient approach to statically compute a WCET that is "soft" rather than "hard". The goal of most timing analysis is to determine a guaranteed WCET; however this execution time may be far above the actual distribution of observed execution times. A WCET estimate that bounds the execution time 99% of the time may be more useful for a designer in a soft real-time environment. This paper discusses an approach to measure the execution time distribution by a hardware simulator, and a path-based timing analysis approach to derive a static estimation of this same distribution. The technique can find a soft WCET for loops having any number of paths.
BibTeX - Entry
@InProceedings{keim_et_al:OASIcs:2009:2292,
author = {Paul Keim and Amanda Noyes and Andrew Ferguson and Joshua Neal and Christopher Healy},
title = {{Extending the Path Analysis Technique to Obtain a Soft WCET}},
booktitle = {9th International Workshop on Worst-Case Execution Time Analysis (WCET'09) },
pages = {1--9},
series = {OpenAccess Series in Informatics (OASIcs)},
ISBN = {978-3-939897-14-9},
ISSN = {2190-6807},
year = {2009},
volume = {10},
editor = {Niklas Holsti},
publisher = {Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
address = {Dagstuhl, Germany},
URL = {http://drops.dagstuhl.de/opus/volltexte/2009/2292},
URN = {urn:nbn:de:0030-drops-22922},
doi = {10.4230/OASIcs.WCET.2009.2292},
note = {also published in print by Austrian Computer Society (OCG) with ISBN 978-3-85403-252-6},
annote = {Keywords: WCET analysis, soft real-time, path-based, distribution}
}
Keywords: |
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WCET analysis, soft real-time, path-based, distribution |
Collection: |
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9th International Workshop on Worst-Case Execution Time Analysis (WCET'09) |
Issue Date: |
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2009 |
Date of publication: |
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26.11.2009 |