Software Agents for Efficient Web Server Performance Management

Shadan SANIEPOUR E.   Behrouz Homayoun FAR  

Publication
IEICE TRANSACTIONS on Information and Systems   Vol.E85-D   No.4   pp.647-656
Publication Date: 2002/04/01
Online ISSN: 
DOI: 
Print ISSN: 0916-8532
Type of Manuscript: Special Section PAPER (Special Issue on Knowledge-Based Software Engineering)
Category: System
Keyword: 
software agent,  performance,  mirroring,  queuing theory,  optimization,  

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Summary: 
Network traffic characteristics impacts directly network performance, and resource allocation policies. In this work, we introduce a multi-agent system, that manages the performance of web servers with minimal cost of mirroring. In our proposed system each web server is viewed as a software agent that perceives its environment by monitoring its traffic. The goal of the agent is to manage the performance, using cooperative mirror servers, while minimizing the cost of mirroring. Communication between the agents enables each web server to decide about its future actions, which is whether to share its load with the cooperative mirror servers, and how much load to assign to them. The architecture of a software agent that is intended to manage the performance of a web server, is elaborated and its different modules are described. Also a set of cooperative agents is defined, that form a multi-agent system and is intended to assure maintaining the performance with minimal cost of mirroring. The experimental results presented in this article illustrates the effectiveness of the proposed system.