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A semi-preemptive priority scheduling discipline: Performance analysis

  • Walraevens, Joris
  • Maertens, Tom
  • Bruneel, Herwig
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    In this paper, we present an in-depth analytical study of a semi-preemptive priority scheduling discipline. This discipline eliminates the deficits of both the full- and non-preemptive versions. Under the non-preemptive category, in particular, higher-priority customers may have to wait even when the service of a lower-priority customer has just started, while under the full-preemptive discipline, the almost completed service of a lower-priority customer may be interrupted due to the arrival of higher-priority customers, possibly causing a large extra delay. For fixed low-priority service times, the semi-preemptive priority scheduling discipline shows a performance gain of up to 6% compared to the full- and non-preemptive versions.

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    File URL: http://www.sciencedirect.com/science/article/pii/S037722171200608X
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    Article provided by Elsevier in its journal European Journal of Operational Research.

    Volume (Year): 224 (2013)
    Issue (Month): 2 ()
    Pages: 324-332

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    Handle: RePEc:eee:ejores:v:224:y:2013:i:2:p:324-332
    Contact details of provider: Web page: http://www.elsevier.com/locate/eor

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    1. Zeephongsekul, P. & Bedford, A., 2006. "Waiting time analysis of the multiple priority dual queue with a preemptive priority service discipline," European Journal of Operational Research, Elsevier, vol. 172(3), pages 886-908, August.
    2. Ndreca, Sokol & Scoppola, Benedetto, 2008. "Discrete time GI/Geom/1 queueing system with priority," European Journal of Operational Research, Elsevier, vol. 189(3), pages 1403-1408, September.
    3. Walraevens, Joris & Steyaert, Bart & Bruneel, Herwig, 2008. "Analysis of a discrete-time preemptive resume priority buffer," European Journal of Operational Research, Elsevier, vol. 186(1), pages 182-201, April.
    4. Feng, Wei & Umemura, Masataka, 2009. "Analysis of a finite buffer model with two servers and two nonpreemptive priority classes," European Journal of Operational Research, Elsevier, vol. 192(1), pages 151-172, January.
    5. Kim, Kilhwan & Chae, Kyung C., 2010. "Discrete-time queues with discretionary priorities," European Journal of Operational Research, Elsevier, vol. 200(2), pages 473-485, January.
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