License: Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported license (CC BY-NC-ND 3.0)
When quoting this document, please refer to the following
DOI: 10.4230/OASIcs.WCET.2008.1664
URN: urn:nbn:de:0030-drops-16644
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Altmeyer, Sebastian ; Gebhard, Gernot

WCET Analysis for Preemptive Scheduling

AltmeyerSebastian.Paper.1664.pdf (0.1 MB)


Hard real-time systems induce strict constraints on the timing of the task
set. Validation of these timing constraints is thus a major challenge during the
design of such a system. Whereas the derivation of timing guarantees must
already be considered complex if tasks are running to completion, it gets even
more complex if tasks are scheduled preemptively -- especially due to
caches, deployed to improve the average performance. In this paper we propose
a new method to compute valid upper bounds on a task's worst case execution time
(WCET). Our method approximates an optimal memory layout such that
the set of possibly evicted cache-entries during preemption is
minimized. This set then delivers information to bound the execution time of
tasks under preemption in an adopted WCET analysis.

BibTeX - Entry

  author =	{Sebastian Altmeyer and Gernot Gebhard},
  title =	{{WCET Analysis for Preemptive Scheduling}},
  booktitle =	{8th International Workshop on Worst-Case Execution Time Analysis (WCET'08)},
  series =	{OpenAccess Series in Informatics (OASIcs)},
  ISBN =	{978-3-939897-10-1},
  ISSN =	{2190-6807},
  year =	{2008},
  volume =	{8},
  editor =	{Raimund Kirner},
  publisher =	{Schloss Dagstuhl--Leibniz-Zentrum fuer Informatik},
  address =	{Dagstuhl, Germany},
  URL =		{},
  URN =		{urn:nbn:de:0030-drops-16644},
  doi =		{10.4230/OASIcs.WCET.2008.1664},
  note =	{also published in print by Austrian Computer Society (OCG) with ISBN 978-3-85403-237-3},
  annote =	{Keywords: WCET, Preemption}

Keywords: WCET, Preemption
Collection: 8th International Workshop on Worst-Case Execution Time WCET Analysis (WCET'08)
Issue Date: 2008
Date of publication: 13.11.2008

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