Accuracy of link capacity estimates using passive and active approaches with CapProbe

Rohit Kapoor*, Ling Jyh Chen, M. Y. Sanadidi, Mario Gerla

*此作品的通信作者

研究成果: 雜誌貢獻會議論文同行評審

7 引文 斯高帕斯(Scopus)

摘要

CapProbe is an inexpensive and accurate means to estimate capacity. CapProbe combines both dispersion and end-to-end delay to estimate the capacity of the narrowest link on a path. We evaluate in this paper the accuracy of CapProbe estimation, and its dependence on end systems speed, packet sizes, narrow link speeds, and other system parameters. We test kernel and user level implementations of CapProbe and find the kernel implementation to be much more accurate. We also evaluate through experiments the effect of probing packet size on the accuracy of CapProbe estimation. Finally, we explore the idea of a "passive CapProbe" within the context of a TCP flow. Passive here means that the dispersion and delay observed for the TCP flow data and ACK packets, without introducing any additional probing packets. We test active and passive versions of CapProbe with TCP. The active version is found to produce more accurate capacity estimates than the passive version.

原文英語
頁(從 - 到)1085-1090
頁數6
期刊Proceedings - International Symposium on Computers and Communications
2
出版狀態已發佈 - 2004
對外發佈
事件Proceedings - ISCC 2004, Ninth International Symposium on Computers and Communications - Alexandria, 埃及
持續時間: 2004 六月 282004 七月 1

ASJC Scopus subject areas

  • 軟體
  • 訊號處理
  • 數學(全部)
  • 電腦科學應用
  • 電腦網路與通信

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