Performance Analysis of Dynamic Priority Shifting

  • Philipp Reinecke
  • Katinka Wolter
  • Johannes Zapotoczky
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 5261)


We investigate the benefit of priority shifting for resource allocation in systems with a shared resource, where higher priority implies better service. Priority schemes where priority levels are assigned fixed shares of the resource experience underutilisation if there are only low-priority tasks present. In these situations, lower priority tasks can be ‘shifted up’ to higher priority. This increases overall system utilisation and improves the service experienced by low-priority tasks. We present a shifting framework, study its properties and develop a Petri net model for a shifting algorithm. We analyse the model in order to identify situations where shifting of priorities is beneficial.


Medium Access Control Task Allocation Contention Window Service Function Enhanced Distribute Channel Access 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2008

Authors and Affiliations

  • Philipp Reinecke
    • 1
  • Katinka Wolter
    • 1
  • Johannes Zapotoczky
    • 1
  1. 1.Institut für InformatikHumboldt-Universität zu BerlinBerlinGermany

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