TCPコネクション多重度制御がiSCSIスループットに与える影響 (情報ネットワーク)  [in Japanese] Simulation study of multiple TCP connections control in iSCSI  [in Japanese]

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Author(s)

    • 野本 義弘 NOMOTO Yoshihiro
    • NTTサービスインテグレーション基盤研究所:名古屋工業大学大学院工学研究科 NTT Service Integration Laboratories, NTT Corporation:Graduate School of Engineering, Nagoya Institute of Technology
    • 今瀬 真 IMASE Makoto
    • 大阪大学大学院情報科学研究科 Graduate School of Information Science and Technology, Osaka University

Abstract

本報告は,広域・広帯域IPネットワークを通した遠隔ストレージ間のバックアップ用途などに適用するiSCSIプロトコルのTCPコネクション数制御機構iSCSI-APT(iSCSI with Automatic Parallelism Tuning)適用時の特性解析を行っている.データ転送実行中の多重度制御の結果として,全体のスループット最大化を実現する多重度下のコネクション間で,パラメータによってはスループットのばらつきが発生すること.また,iSCSIの転送単位により,ばらつきが調整されることを示す.

In this report, we simulate iSCSI session with multiple TCP connections in long-fat networks using NS-2. In recent years, as a protocol for building SANs (Storage Area Networks), iSCSI has been attracting attention for its low cost and compatibility with existing networking infrastructure. However, it has been known that iSCSI throughput degrades in long-fat network. iSCSI supports a feature called multiple connections, which transfers data over multiple TCP connection in an iSCSI session. However, for utilizing this feature effectively, the number of multiple connections must be appropriately configured according to the network status. In this paper, we evaluate the performance iSCSI protocol with iSCSI-APT (Automatic Parallelism Tuning), which automatically adjusts the number of multiple connections according to the network status.

Journal

  • IEICE technical report

    IEICE technical report 108(92), 1-6, 2008-06-19

    The Institute of Electronics, Information and Communication Engineers

Cited by:  6

Codes

  • NII Article ID (NAID)
    110006951110
  • NII NACSIS-CAT ID (NCID)
    AN10013072
  • Text Lang
    JPN
  • Article Type
    Journal Article
  • ISSN
    09135685
  • NDL Article ID
    9573753
  • NDL Source Classification
    ZN33(科学技術--電気工学・電気機械工業--電子工学・電気通信)
  • NDL Call No.
    Z16-940
  • Data Source
    CJPref  NDL  NII-ELS 
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