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IEEE Transactions on Parallel and Distributed Systems archiveVolume 16 , Issue 11 (November 2005) table of contents
Pages: 1078 - 1091
Year of Publication: 2005
ISSN:1045-9219
Authors
Zhenyun Zhuang
Members
Li Xiao
IEEE
Yunhao Liu
IEEE
Publisher
IEEE Press Piscataway, NJ, USA
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10.1109/TPDS.2005.137
ABSTRACT
Superpeer unstructured P2P systems have been found to be very effective by dividing the peers into two layers, superlayer and leaf-layer, in which message flooding is only conducted among superlayer and all leaf-peers are represented by corresponding superpeers. However, current superpeer systems do not employ any effective layer management schemes, so the transient and low-capacity peers are allowed to act as superpeers. Moreover, the lack of an appropriate size ratio maintenance mechanism on superlayer to leaf-layer makes the system's search performance far from being optimal. We present one workload model aimed at reducing the weighted overhead of a network. Using our proposed workload model, a network can determine an optimal layer size ratio between leaf-layer and superlayer. We then propose a Dynamic Layer Management algorithm, DLM, which can maintain an optimal layer size ratio and adaptively elect and adjust peers between superlayer and leaf-layer. DLM is completely distributed in the sense that each peer decides to be a superpeer or a leaf-peer independently without global knowledge. DLM could effectively help a superpeer P2P system maintain the optimal layer size ratio and designate peers with relatively long lifetime and large capacities as superpeers, and the peers with short lifetime and low capacities as leaf-peers under highly dynamic network situations. We demonstrate that the quality of a superpeer system is significantly improved under the DLM scheme by comprehensive simulations.
REFERENCES
Note: OCR errors may be found in this Reference List extracted from the full text article. ACM has opted to expose the complete List rather than only correct and linked references.

1
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CITED BY

Jinpeng Huai , Tianyu Wo , Yunhao Liu, Resource management and organization in CROWN grid, Proceedings of the 1st international conference on Scalable information systems, p.10-es, May 30-June 01, 2006, Hong Kong
INDEX TERMS
Primary Classification: C. Computer Systems Organization C.2 COMPUTER-COMMUNICATION NETWORKS C.2.4 Distributed Systems
Additional Classification: C. Computer Systems Organization C.2 COMPUTER-COMMUNICATION NETWORKS C.2.3 Network Operations Subjects: Network management H. Information Systems H.5 INFORMATION INTERFACES AND PRESENTATION (I.7) H.5.3 Group and Organization Interfaces Subjects: Web-based interaction
General Terms: Design, Experimentation, Management, Measurement, Performance
Keywords: Unstructured peer-to-peer, superpeer architecture, layer management, workload analysis, adaptive algorithms.
REVIEW "Cui-Qing Yang : Reviewer"
With the growing popularity of peer-to-peer (P2P) applications, such as Gnutella and KaZaA (FastTrack), traffic based on this activity is becoming the dominant traffic on the Internet. The original P2P networking protocol (Gnutella) is a true dist more...