A hybrid framework of RR scheduler to ensure priority, low complexity and delay with relative fairness

  • Authors:
  • John Tsiligaridis;Raj Acharya

  • Affiliations:
  • Math and Computer Science, Heritage University, Toppenish, WA;Computer Science and Engineering, Penn. State University, 220 Pond Lab, University Park, PA

  • Venue:
  • ISSADS'05 Proceedings of the 5th international conference on Advanced Distributed Systems
  • Year:
  • 2005

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Abstract

In order to manage fairly the service of the queueing elements, the support of QoS with a sophisticated packet scheduling algorithms that is a part of the Fair Queuing family can be considered as essential. Two are the main parts that this work focuses; First, the Palindromic Motion (PM) algorithm that works as a timestamp (or sorted priority) scheduler keeping the flow service priority and second, the two backup flexible credit methods for adjustment of the weight which are used instead of the fixed credit method with a lower maximum weight. A feedback mechanism is used for adjusting the weight size considering the current packet size. The provisional increase of the weight is proposed by the two backup methods; the Direct Increase Weight (DIW) algorithm and the Compound Round Robin (CRR) algorithm. Advantages over recent schemes like Group Round Robin (GRR) etc are presented. Simulation experiments are provided.