JRFGW-TITDNP-01
Y. Joo, V. Ribeiro, A. Feldmann, A.C. Gilbert, W. Willinger. TCP/IP Traffic Dynamics and Network Performance: A Lesson in Workload Modeling, Flow Control, and Trace-Driven Simulations. SIGCOMM Computer Communications Review (CCR), 31(2):1-13, April 2001.
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Abstract
The main objective of this paper is to demonstrate in the context of a simple TCP IP-based network that depending on the underlying assumptions about the inherent nature of the dynamics of network tra c, very di erent conclusions can be derived for a number of well-studied and apparently well-understood problems in the area of performance evaluation. For example, a tra c workload model can either completely ignore the empirically observed high variability at the TCP connection level i.e., assume in nite sources" or explicitly account for it with the help of heavy-tailed distributions for TCP connection sizes or durations. Based on detailed ns-2 simulation results, we illustrate that these two commonly-used tra c workload scenarios can give rise to fundamentally di erent bu er dynamics in IP routers. Using a second set of ns-2 simulation experiments, we also illustrate a qualitatively very di erent queueing behavior within IP routers depending on whether the tra c arriving at the router is assumed to be endogenous in nature i.e., a result of the closed loop" nature of the feedback-based congestion control algorithm of TCP or exogenously determined i.e., given by some conventional trace model a xed open loop" description of the tra c as seen by the router
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BibTex Reference
@article{JRFGW-TITDNP-01,
Author = {Joo, Y. and Ribeiro, V. and Feldmann, A. and Gilbert, A.C. and Willinger, W.},
Title = {TCP/IP Traffic Dynamics and Network Performance: A Lesson in Workload Modeling, Flow Control, and Trace-Driven Simulations},
Journal = {SIGCOMM Computer Communications Review (CCR)},
Volume = {31},
Number = {2},
Pages = {1--13},
Month = {April},
Year = {2001}
}
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