中国邮电高校学报(英文) ›› 2010, Vol. 17 ›› Issue (1): 111-119.doi: 10.1016/S1005-8885(09)60434-9

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Using optorsim to efficiently simulate replica placement strategies

任勋益,王汝传,孔强   

  1. 1. College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
    2. State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210093, China
  • 收稿日期:2009-04-02 修回日期:1900-01-01 出版日期:2010-02-28
  • 通讯作者: 任勋益

Using optorsim to efficiently simulate replica placement strategies

REN Xun-yi, WANG Ru-chuan, KONG Qiang   

  1. 1. College of Computer, Nanjing University of Posts and Telecommunications, Nanjing 210003, China
    2. State Key Laboratory for Novel Software Technology, Nanjing University, Nanjing 210093, China
  • Received:2009-04-02 Revised:1900-01-01 Online:2010-02-28
  • Contact: REN Xun-yi

摘要:

Optorsim provides simulations of file replication strategies such as replica placement, replication scheduling, replica consistency maintenance, etc. However, to assess a replica strategy a researcher must write network configuration files and repeatedly modify parameters, which is inefficient. In this article, a scale-free algorithm is developed to generate network topology which is loaded into Optorsim, and a graphical user interface (GUI) is implemented to set all configuration parameters and algorithm parameters. Moreover, a new replica placement strategy, the replica creation (RC) algorithm, is proposed based on ‘social ability’. Through the GUI, parameters could be conveniently modified to debug proposed algorithm. The simulation results demonstrate that the RC algorithm can reduce both processing time and storage consumption. Meanwhile, the simulation experience shows that working with Optorsim through the GUI is efficient.

关键词:

optorsim,;data;grid,;replica;replacement,;simulation;

Abstract:

Optorsim provides simulations of file replication strategies such as replica placement, replication scheduling, replica consistency maintenance, etc. However, to assess a replica strategy a researcher must write network configuration files and repeatedly modify parameters, which is inefficient. In this article, a scale-free algorithm is developed to generate network topology which is loaded into Optorsim, and a graphical user interface (GUI) is implemented to set all configuration parameters and algorithm parameters. Moreover, a new replica placement strategy, the replica creation (RC) algorithm, is proposed based on ‘social ability’. Through the GUI, parameters could be conveniently modified to debug proposed algorithm. The simulation results demonstrate that the RC algorithm can reduce both processing time and storage consumption. Meanwhile, the simulation experience shows that working with Optorsim through the GUI is efficient.

Key words:

optorsim;data grid;replica replacement;simulation