Mortgage Auto Credit Credit As

Mortgage

Mortgage Auto Credit Credit As 自然之道

Mortgage Auto Credit Credit As

出度：10-20

总partner：包括那些下了不到10个piece的，或根本没下的Peer

总度30-40。

度随着人数的增长而增长

9pm时，度增大。

出degree与上载throughput有一点相关性：

Pearson product-moment correlation coefficient：0.4871

分析是否有超级节点：

用likelihood metric proposed by Li et al. in [Li et al. 2004],
用上载throughput来计算。
没有超级节点

参考文献：

回顾历史：

Kazza，第一代Gnutella，
现代Gnutella的经典文献：P2P topology characterization, Stutzbach et al. [Stutzbach et al. 2005]
没有BT网络的拓扑分析
BT性能，[Pouwelse et al. 2005], Izal et al. [Izal et al. 2004] and Guo et al. [Guo et al. 2005]
KAD的peer churn，session特点。 [Stutzbach and Rejaie 2006] and Steiner et al. [Steiner et al. 2007]
Skype：协议，流量特性，用户满意度。[Chen et al. 2006].
Ali,Hei,Silverston,Vu的测量
GridCast P2P VoD用户体验的测量 Cheng et al. [Cheng et al. 2007]

星期六 10 一 2009

AnySee Peer-to-Peer Live Streaming

Posted by yishuai under Streaming
No Comments

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;
(3) guarantee streaming service quality by using the nearest peers, even when such peers might belong to different overlays; and
(4) balance the load among the group members.

Metrics:

startup delay
source-to-end delay
playback continuity

Problem:

still suffer from long delay and unplanned interruptions, especially when a large number of peers join the network simultaneously.

challenges:

(1) how to find paths with low delays, including source-to-end delay and startup delay, in a global P2P network;
(2) how to maintain the service continuity and stability (decreasing the impact of interruption caused by peers leaving);
(3) how to determine the frequency of optimization operations; and
(4) how to reduce the control overhead caused by the algorithm.

Component：

inter-overlay optimization manager xMortgage Auto Credit Credit As 自然之道 e Credit oMortgage Auto Credit Credit As 自然之道 p h l Mortgage Mortgage