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Conference Paper


Contradictory Relationship between Hurst parameter and Queueing Performance


Long Range Dependent LRD network trac does not behave like the trac generated by the Poisson model or other Markovian models The main dier ence is that LRD trac increases queueing delays due to the burstiness of the trac over many time scales LRD trac has been measured in dierent types and sizes of networks for dierent applications eg WWW and dierent trac aggregations Since LRD behaviour is not rare nor isolated accurate characterization of LRD trac is very important in order to predict performance and to allocate network resources The Hurst parameter is used to describe the degree of LRD and the burstiness of the trac In this paper we analyze UCLA Computer Science Department network trac traces and compute their Hurst parameters Queueing simulation is used to study the impact of LRD and to determine if the Hurst parameter accurately describes such LRD Our results show that the Hurst parameter is not by itself an accurate predictor of the queueing performance for a given LRD trac trace

Paper: PDF file of paper

Information & Date

In the proceedings of the 1999 Symposium on the Performance Evaluation of Computer and Telecommunication Systems (SPECTS, Chicago, Illinois, July. 1999


Ronn Ritke
Xiaoyan Hong
Mario Gerla