Energy-Aware Replication Models of Mobile Agents

Application processes are performed on servers in a cluster. Here, processes have to be not only reliably performed in presence of server faults but also the total electric power consumed by servers has to be reduced. The more number of replicas, the more reliably a process can be performed but the more amount of electric power is consumed by the servers. In this paper, we consider a mobile agent approach to realizing fault-tolerant energy-aware clusters. Here, a mobile agent is passively replicated on multiple servers. One primary replica of a mobile agent moves around servers and is performed on servers while the other secondary replicas are not performed. If the primary replica is faulty, one of the secondary replicas takes over the primary replica. In this paper, we discuss how to select servers for replicas to reliably and energy-efficiently perform mobile agents. We evaluate the energy-efficient passive replication scheme of a mobile agent in terms of average execution time of each mobile agent.