Abstract
In DHT based P2P systems, various issues such as peer heterogeneity,network topology, and diverse file popularity, may affect the DHT system efficiency. A new load balance algorithm, static load distribution algorithm and dynamic load adjustment algorithm (SDDA) is proposed, SDDA is designed based on the concept of virtual server, The new algorithm can dynamically adjusts Address-Space and fairness workload for each node after measured it’s capacity. Through research and simulation analysis, compared with the traditional virtual server load balancing algorithm, the SDDA algorithm is with better load balance, faster velocity of load balancing, less load movement cost, and more excellent stability of P2P system.
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