Throughputs in processor sharing models for integrated stream and elastic traffic

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We present an analytical study of throughput measures in processor sharing queuing systems with randomly varying service rates, modelling e.g. a communication link in an integrated services network carrying prioritised fixed rate stream traffic and rateadaptive elastic traffic. A number of distinct throughput measures for the elastic traffic are defined, analysed and compared under various system conditions, both by analytical means and simulation. It is concluded that the call-average throughput, which is most relevant from the user point of view but typically hard to analyse, is very well approximated by the newly proposed so-called expected instantaneous throughput, which is readily obtained from the system’s steady state distribution.
Original languageUndefined
Article number10.1016/j.peva.2007.05.002
Pages (from-to)152-180
Number of pages29
JournalPerformance evaluation
Issue number2
Publication statusPublished - Feb 2008


  • MSC-90B18
  • MSC-90B22
  • METIS-249294
  • IR-62020
  • EWI-11414

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