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GridCast: Improving peer sharing for P2P VoD

GridCast: Improving peer sharing for P2P VoD GridCast: Improving Peer Sharing for P2P VoD BIN CHENG Huazhong University of Science and Technology LEX STEIN Microsoft Research Asia HAI JIN, and XIAOFEI LIAO Huazhong University of Science and Technology and ZHENG ZHANG Microsoft Research Asia Video-on-Demand (VoD) is a compelling application, but costly. VoD is costly due to the load it places on video source servers. Many have proposed using peer-to-peer (P2P) techniques to shift load from servers to peers. Yet, nobody has implemented and deployed a system to openly and systematically evaluate how these techniques work. This article describes the design, implementation and evaluation of GridCast, a real deployed P2P VoD system. GridCast has been live on CERNET since May of 2006. It provides seek, pause, and play operations, and employs peer sharing to improve system scalability. In peak months, GridCast has served videos to 23,000 unique users. From the rst deployment, we have gathered information to understand the system and evaluate how to further improve peer sharing through caching and replication. We rst show that GridCast with single video caching (SVC) can decrease load on source servers by an average of 22% from a client-server architecture. We analyze the net effect on system resources http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP) Association for Computing Machinery

GridCast: Improving peer sharing for P2P VoD

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Publisher
Association for Computing Machinery
Copyright
Copyright © 2008 by ACM Inc.
ISSN
1551-6857
DOI
10.1145/1412196.1412199
Publisher site
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Abstract

GridCast: Improving Peer Sharing for P2P VoD BIN CHENG Huazhong University of Science and Technology LEX STEIN Microsoft Research Asia HAI JIN, and XIAOFEI LIAO Huazhong University of Science and Technology and ZHENG ZHANG Microsoft Research Asia Video-on-Demand (VoD) is a compelling application, but costly. VoD is costly due to the load it places on video source servers. Many have proposed using peer-to-peer (P2P) techniques to shift load from servers to peers. Yet, nobody has implemented and deployed a system to openly and systematically evaluate how these techniques work. This article describes the design, implementation and evaluation of GridCast, a real deployed P2P VoD system. GridCast has been live on CERNET since May of 2006. It provides seek, pause, and play operations, and employs peer sharing to improve system scalability. In peak months, GridCast has served videos to 23,000 unique users. From the rst deployment, we have gathered information to understand the system and evaluate how to further improve peer sharing through caching and replication. We rst show that GridCast with single video caching (SVC) can decrease load on source servers by an average of 22% from a client-server architecture. We analyze the net effect on system resources

Journal

ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP) – Association for Computing Machinery

Published: Oct 1, 2008

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