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Performance evaluation of traffic congestion for multiple-lock checking algorithm in distributed share virtual environment applications

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3 Author(s)
Olarn Wongwirat ; Fac. of Inf. Technol., King Mongkut''s Inst. of Technol., Bangkok, Thailand ; Sathitwiriyawong, C. ; Ohara, S.

Multiple-lock checking algorithm has been studied and developed to support simultaneous access of shared resources, or objects, by logical processes of applications in distributed shared virtual environment for two years. Its purpose is to provide synchronization among the logical processes in a networked virtual environment where users' applications can interact with each other in the shared environment. There are two main factors effecting performance of the multiple-lock checking mechanism in the distributed share virtual environment application, which are network delay and traffic. The former factor has been issued in our previous work. This paper verifies the traffic congestion on local network (LAN) that is generated by the number of logical processes. The effect of increased traffic to the performance of multiple-lock checking algorithm when accessing the shared object in the shared virtual environment application is also investigated. Simulation results show that utilization of the local network to support the locking mechanism for non-competition case is insignificant comparing with the number of logical processes. The locking time for distinct logical processes is constant and below 100 μs at lower 60% workload condition. Finally, the multiple-lock checking algorithm can perform efficiently on the LAN with no traffic affecting the performance

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TENCON 2001. Proceedings of IEEE Region 10 International Conference on Electrical and Electronic Technology  (Volume:1 )

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