Performance evaluation of weighted fair queuing system using matrix geometric method

Amina Al-Sawaai*, Irfan Awan, Rod Fretwell

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

4 Citations (Scopus)


This paper analyses a multiple class single server M/M/1/K queue with finite capacity under weighted fair queuing (WFQ) discipline. The Poisson process has been used to model the multiple classes of arrival streams. The service times have exponential distribution. We assume each class is assigned a virtual queue and incoming jobs enter the virtual queue related to their class and served in FIFO order.We model our system as a two dimensional Markov chain and use the matrix-geometric method to solve its stationary probabilities. This paper presents a matrix geometric solution to the M/M/1/K queue with finite buffer under (WFQ) service. In addition, the paper shows the state transition diagram of the Markov chain and presents the state balance equations, from which the stationary queue length distribution and other measures of interest can be obtained. Numerical experiments corroborating the theoretical results are also offered.

Original languageEnglish
Title of host publicationNETWORKING 2009 - 8th International IFIP-TC 6 Networking Conference, Proceedings
Number of pages13
Publication statusPublished - 2009
Externally publishedYes
Event8th International IFIP-TC 6 Networking Conference, NETWORKING 2009 - Aachen, Germany
Duration: May 11 2009May 15 2009

Publication series

NameLecture Notes in Computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics)
Volume5550 LNCS
ISSN (Print)0302-9743
ISSN (Electronic)1611-3349


Other8th International IFIP-TC 6 Networking Conference, NETWORKING 2009


  • First inter first out (FIFO)
  • Markov chain
  • Weighted fair queuing (WFQ)

ASJC Scopus subject areas

  • Theoretical Computer Science
  • Computer Science(all)


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