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Fixed-Priority Schedulability of Sporadic Tasks on Uniprocessors is NP-Hard

  • Uppsala University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We study the computational complexity of the FP-schedulability problem for sporadic or synchronous periodic tasks on a preemptive uniprocessor. We show that this problem is (weakly) NP-hard, even when restricted to either (i) task sets with implicit deadlines and rate-monotonic priority ordering, or (ii) task sets with constrained deadlines, deadline-monotonic priority ordering and utilization bounded by any constant c, such that 0 c 1.

Original languageEnglish
Title of host publicationProceedings - 2017 IEEE Real-Time Systems Symposium, RTSS 2017
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages139-146
Number of pages8
ISBN (Electronic)9781538614143
DOIs
StatePublished - 2 Jul 2017
Externally publishedYes
Event38th IEEE Real-Time Systems Symposium, RTSS 2017 - Paris, France
Duration: 5 Oct 20178 Oct 2017

Publication series

NameProceedings - Real-Time Systems Symposium
Volume2018-January
ISSN (Print)1052-8725

Conference

Conference38th IEEE Real-Time Systems Symposium, RTSS 2017
Country/TerritoryFrance
CityParis
Period5/10/178/10/17

Keywords

  • Scheduling
  • complexity
  • fixed-priority
  • real-time

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