Cooperative Load Balancing and Admission Control in Distributed Systems

Requests in a distributed computing environment lead to multiple processings, both concurrent and sequential at various components during the lifetime of that request. Any failure of a critical transaction would lead to failure of the complete process, therefore leading to dropping of that request. Such request drops have an adverse effect on the resource utilization of the system and the QoS guaranteed to the user. This paper studies the factor of request drop rate in a distributed system and its effect on the resource utilization and QoS. As part of the solution, an admission control framework using flow control technique has been proposed in order to minimize request drops. Multiple load balancers implementing the admission control techniques cooperate with each other in order to minimize the effect of request drops. A multi-queue based architecture for a load balancer has been proposed for this purpose.

By: Ashish Kundu

Published in: RI03012 in 2003


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