Low overhead agent replication for the reliable mobile agent system

Abstract

Fault-tolerance is an important design issue to build a mobile agent system satisfying the exactly-once execution property. Two fault tolerance schemes have been proposed. The replication scheme provides a higher degree of fault-tolerance, while the checkpointing scheme requires the lower overhead. In this paper, we analyze the performance of three optimization approaches to the agent replication and compare their overhead with the one of the checkpointing scheme. For the performance evaluation, optimized replication schemes and the checkpointing scheme have been implemented on top of the Aglet system. The experimental results show that the optimization can achieve up to 37% reduction on the agent migration time. © Springer-Verlag 2003.