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International Conference On Principles Of Distributed Systems

OPODIS 2010: Principles of Distributed Systems pp 270–285Cite as

On Best-Effort Utility Accrual Real-Time Scheduling on Multiprocessors

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Part of the book series: Lecture Notes in Computer Science ((LNTCS,volume 6490))

Abstract

We consider the problem of scheduling dependent real-time tasks for overloads on a multiprocessor system, yielding best-effort timing assurance. The application/scheduling model includes tasks with time/utility function time constraints, mutual exclusion constraints, and arbitrary arrival, execution-time and resource access behaviors, with timeliness optimization objective of maximizing total accrued utility while ensuring mutual exclusion constraints and deadlock-freedom. Since this problem is NP-hard, we develop a class of polynomial-time heuristic algorithms, called the Global Utility Accrual (GUA), and present two algorithm instances, namely, Non-Greedy Global Utility Accrual (NG-GUA) and Greedy Global Utility Accrual (G-GUA). We establish several properties of the algorithms including conditions under which optimal total utility is accrued, mutual exclusion constraints are satisfied, and deadlock-freedom is achieved. We develop a Linux-based real-time kernel called ChronOS, extended from PREEMPT_RT real-time patch. ChronOS provides a framework for implementation of a variety of multiprocessor schedulers. Our experimental studies with ChronOS reveal the effectiveness of GUA algorithms under a broad range of workloads.

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Author information

Authors and Affiliations

  1. ECE Dept., Virgina Tech, Blacksburg, VA, 24061, USA

    Piyush Garyali, Matthew Dellinger & Binoy Ravindran

Authors
  1. Piyush Garyali
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  2. Matthew Dellinger
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  3. Binoy Ravindran
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Editor information

Editors and Affiliations

  1. Department of Computer Science and Engineering, Washington University, Campus Box 1045, One Brookings Drive, 63130, St. Louis, MO, USA

    Chenyang Lu

  2. Osaka University, Japan

    Toshimitsu Masuzawa

  3. LaBRI, University of Bordeaux, 351 cours de la Libération, 33405, Talence, France

    Mohamed Mosbah

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Garyali, P., Dellinger, M., Ravindran, B. (2010). On Best-Effort Utility Accrual Real-Time Scheduling on Multiprocessors. In: Lu, C., Masuzawa, T., Mosbah, M. (eds) Principles of Distributed Systems. OPODIS 2010. Lecture Notes in Computer Science, vol 6490. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-17653-1_21

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  • DOI: https://doi.org/10.1007/978-3-642-17653-1_21

  • Publisher Name: Springer, Berlin, Heidelberg

  • Print ISBN: 978-3-642-17652-4

  • Online ISBN: 978-3-642-17653-1

  • eBook Packages: Computer ScienceComputer Science (R0)

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