http://taiji.72pines.com Just another 七十二松 (72pines) weblog Thu, 13 Aug 2009 09:06:43 +0000 http://backend.userland.com/rss092 en http://netcomm.bjtu.edu.cn/yishuai http://taiji.72pines.com/2009/08/13/new-blog/ Chuan Wu, Baochun Li （University of Toronto） Shuqiao Zhao （UUSee, Inc） 目标：分析拓扑。 指出商业系统中的peer选择和拓扑构造算法不复杂。 提到mesh比tree好的原因，但未展开证明。 - 适应peer dynamics - flash crowd时好 - 带宽利用率高 - 拓扑维护简单 ... http://taiji.72pines.com/2009/01/12/exploring-large-scale-peer-to-peer-live-streaming-topologies/ Xiaofei Liao, Basic: inter-overlay optimization, resources can join multiple overlays, Goal： (1) improve global resource utilization and distribute traffic to all physical links evenly; (2) assign resources based on their locality and delay; ... http://taiji.72pines.com/2009/01/10/anysee-peer-to-peer-live-streaming/ Goal: The tree-based structures are constrained by the limited end-user upload bandwidth which limits the tree fan-out leading to large tree depths. This leads to high playback delays for leaf users and renders these systems susceptible to nodes leaving the system. ... http://taiji.72pines.com/2009/01/10/analytical-model-for-bittorrent-based-live-video-streaming/ Contribution a framework in which to analyze these P2P applications from a single observable point Result 1、analyze control traffic to present a probable operation model about 40% of the packets are 40 byte packets. These packets are pure acknowledgments ... http://taiji.72pines.com/2009/01/10/measurement-of-commercial-peer-to-peer-live-video-streaming/ Long Vu, UIUC Basic Result over 50% of the captured peers are non-responsive: PPLive peers are impatient.: 50% peers < 10min, 60% peers < 20min, 90% < 100min short-term sessions, e.g. < 50min depend on channel characteristics, while long-term ... http://taiji.72pines.com/2009/01/10/mapping-the-pplive-network-studying-the-impacts-of-media-streaming-on-p2p-overlays/ Rakesh Kumar Result performance is largely determined by a critical value. a certain ratio of traffic loads exceeds the critical value buffering can bring more improvement than can additional infrastructure bandwidth. Basic In ... http://taiji.72pines.com/2009/01/10/stochastic-fluid-theory-for-p2p-streaming-systems/ Xiaojun Hei, Chao Liang, Jian Liang, Yong Liu and Keith W. Rossy Basic: - a dedicated PPLive crawler - viewing behaviors as regular TV users - peer dynamically with a large number of peers ... http://taiji.72pines.com/2009/01/10/a-measurement-study-of-a-large-scale-p2p-iptv-system/ Basic： - 100,000 simultaneous users in one channel - video bit rates 250 Kbps to 400 Kbps with a few channels 800 Kbps. 340k for cctv3 and 312 for cctv10 - TCP for both signaling and video streaming ... http://taiji.72pines.com/2009/01/10/insights-into-pplive-a-measurement-study-of-a-large-scale-p2p-iptv-system/ Xiaojun Hei, Yong Liu and Keith W. Ross 1. buffer bitmap crawler (buffer maps) - utilizes both UDP and TCP transport for collecting peer lists - TCP for collecting buffer maps from many remote peers during the same period of time. ... http://taiji.72pines.com/2009/01/10/inferring-network-wide-quality-in-p2p-live-streaming-systems/