文章基本信息

标题：An Efficient Control Mechanism for Self-Organizing Overlay Networks of Large-Scale P2P Systems
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作者：Hiroaki KOBAYASHI ; Hiroyuki TAKIZAWA ; Takuro OKAWA 等
期刊名称：Interdisciplinary Information Sciences
印刷版ISSN：1340-9050
电子版ISSN：1347-6157
出版年度：2007
卷号：13
期号：2
页码：227-237
DOI：10.4036/iis.2007.227
出版社：The Editorial Committee of the Interdisciplinary Information Sciences
摘要：P2P (Peer to Peer) has a great potential to handle highly-distributed computing resources and is expected to be a key technology to realize ubiquitous computing environments over the Internet. However, P2P systems tend to waste the network bandwidth for resource acquisition because of their decentralized resource management. This paper presents an efficient control mechanism for self-organizing overlay networks of large-scale P2P systems, and evaluate its performance in detail. The overlay network is configured by making local clusters reflect current interests of individual peers and connecting them together based on their similarity. As a result, the overlay network provides the resource exploitation space for some specific interests. In addition, the overlay network can dynamically be reconfigured based on the change in the interests of individual peers across time so that more useful peers at that time can be reconnected closer to their client peers. Therefore, multicasting of resource requesting messages can be carried out only over peers with similar interests that are dynamically connected through the overlay network, resulting in a remarkable decrease in both messages for resource acquisition and hops a resource requesting query travels to reach the peer that satisfies the request. Experimental results indicate that the proposed mechanism can realize effective self-organization of the overlay network in which useful peers are dynamically relocated around client peers. In addition, the adaptive allocation of links to peers according to their capability works well to keep the higher performance and fault-tolerance of the self-organizing overlay network.
关键词：P2P computing;computing resource search;self-organizing networks;service composition