Analysis Evaluation of Parallel TCP : Is It Really Effective for Long Fat Networks?(Internet)

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概要

• 論文の詳細を見る

• Parallel TCP is one possible approach to increasing throughput of data transfer in Long Fat Networks (LFNs). Using parallel TCP is something of black art. As high-speed transport-layer protocols appear, e.g. HSTCP, it is necessary to reinvestigate the performance of parallel TCP, because a choice has to be make among them for the system. In this paper, the performance of parallel TCP is evaluated by mathematical analysis based on a simple dumbbell topology. Packet drop rate and aggregate goodput are used as two metrics to characterize the performance of parallel TCP. Two cases, namely synchronization and non-synchronization, are analyzed in detail when DropTail is deployed on routers. The synchronization case is common in using parallel TCP, but the goodput deteriorates seriously. The non-synchronization case may benefit parallel TCP, but extra mechanisms are required, and it is not easy to implement in the real world. The problem also remains even if Random Early Detection (RED) queue management is employed on routers. The analysis results show the difficulty in using parallel TCP in practice.

• 社団法人電子情報通信学会の論文
• 2007-03-01

著者

• MURATA Masayuki

  Graduate School of Information Science and Technology, Osaka University

• Murata Masayuki

  Osaka Univ. Suita‐shi Jpn

• Murata Masayuki

  Graduate School Of Information Science And Technology

• HASEGAWA Go

  Graduate School of Infomation Science and Technology, Osaka University

• ZHANG Zongsheng

  Network Center of Jilin University

• Murata Masayuki

  Graduate School Of Frontier Biosciences Osaka University

• Hasegawa Go

  Osaka Univ. Toyonaka‐shi Jpn

• Hasegawa Go

  Graduate School Of Infomation Science And Technology Osaka University

• Murata Masayuki

  Graduate School Of Engineering Science Osaka University

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