Distributed prefetching scheme for random seek support in peer-to-peer streaming applications
Proceedings of the ACM workshop on Advances in peer-to-peer multimedia streaming
A peer-to-peer on-demand streaming service and its performance evaluation
ICME '03 Proceedings of the 2003 International Conference on Multimedia and Expo - Volume 1
OBN: Peering for Finding Suppliers in P2P On-demand Streaming Systems
ICPADS '06 Proceedings of the 12th International Conference on Parallel and Distributed Systems - Volume 1
Understanding user behavior in large-scale video-on-demand systems
Proceedings of the 1st ACM SIGOPS/EuroSys European Conference on Computer Systems 2006
Measurements, analysis, and modeling of BitTorrent-like systems
IMC '05 Proceedings of the 5th ACM SIGCOMM conference on Internet Measurement
Can internet video-on-demand be profitable?
Proceedings of the 2007 conference on Applications, technologies, architectures, and protocols for computer communications
Understanding mesh-based peer-to-peer streaming
Proceedings of the 2006 international workshop on Network and operating systems support for digital audio and video
RINDY: a ring based overlay network for peer-to-peer on-demand streaming
UIC'06 Proceedings of the Third international conference on Ubiquitous Intelligence and Computing
An empirical study of free-riding behavior in the maze p2p file-sharing system
IPTPS'05 Proceedings of the 4th international conference on Peer-to-Peer Systems
UUSee: large-scale operational on-demand streaming with random network coding
INFOCOM'10 Proceedings of the 29th conference on Information communications
TrueVod: streaming or progressive downloading?
IEEE Communications Letters
P2PVR: A playback offset aware multicast tree for on-demand video streaming with VCR functions
Journal of Systems Architecture: the EUROMICRO Journal
Modeling and analysis of multi-channel P2P VoD systems
Journal of Network and Computer Applications
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Video-on-demand (VoD) is increasingly popular with internet users. However, VoD is costly due to the load placed on video servers. Peer-to-peer (P2P) techniques are an approach to alleviating server load through peer-assisted sharing. Existing studies on P2P VoD are mostly based on simulation and focus on areas such as overlay topology, but little is known about the effectiveness of P2P in a real VoD system. In this paper we present a comprehensive measurement study of GridCast, a deployed experimental P2P VoD system. Using a 2-month log of GridCast, we evaluate its scalability and end user experience. Motivated by the observations on user behavior and unused peer resource, we further optimize its performance. Our key findings are: (1) a moderate number of concurrent users can derive satisfactory user experience. However, good network bandwidth at peers and adequate server provisioning are still critical to good user experience; (2) a simple prefetching algorithm can be effective to improve random seeks; (3) a simple caching across multiple videos has great potential to further improve system scalability. Overall, we believe that it is feasible to provide a cost-effective P2P VoD service with acceptable user experience, and there is a fundamental tradeoff between good user experience and system scalability.