Analysis & Minimization of the Effect of Delay on Load Balancing for Efficient Web Server Queueing Model

Harikesh Singh and Shishir Kumar
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Harikesh Singh: Department of Computer Science & Engineering, Jaypee University of Engineering & Technology, Guna, India
Shishir Kumar: Department of Computer Science & Engineering, Jaypee University of Engineering & Technology, Guna, India

International Journal of System Dynamics Applications (IJSDA), 2014, vol. 3, issue 4, 1-16

Abstract: Load balancing applications introduce delays due to load relocation among various web servers and depend upon the design of balancing algorithms and resources required to share in the large and wide applications. The performance of web servers depends upon the efficient sharing of the resources and it can be evaluated by the overall task completion time of the tasks based on the load balancing algorithm. Each load balancing algorithm introduces delay in the task allocation among the web servers, but still improved the performance of web servers dynamically. As a result, the queue-length of web server and average waiting time of tasks decreases with load balancing instants based on zero, deterministic, and random types of delay. In this paper, the effects of delay due to load balancing have been analyzed based on the factors: average queue-length and average waiting time of tasks. In the proposed Ratio Factor Based Delay Model (RFBDM), the above factors are minimized and improved the functioning of the web server system based on the average task completion time of each web server node. Based on the ratio of average task completion time, the average queue-length and average waiting time of the tasks allocated to the web server have been analyzed and simulated with Monte-Carlo simulation. The results of simulation have shown that the effects of delays in terms of average queue-length and average waiting time using proposed model have minimized in comparison to existing delay models of the web servers.

Date: 2014
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