A churn model based on the global geographical distribution of nodes

摘要：

The dynamics of peer participation, or churn, is critical for design, implementation and evaluation of Peer-to-peer (P2P) systems. The metrics used to characterize the churn is distributions of the node session lengths and arrival intervals. The prior studies setup the model by measuring the historical logs or records, and treat the churn as one whole black-box without understanding the inside of peer’s population. We investigate churn in another point of view, and find that modeling it based on the global geographical distribution of peer nodes will result in a system which behave in the way compliant to the measurement taken by previous works. By this model, we do see some more future things than other models. We might expect or predict when and what nodes would return back, as well as when and what nodes would disappear at high possibility. So it is useful when designing a system optimized both to the pass and the future, which could reduce the overhead of the maintenance of underlying overlay network of DHTs and lower the redundant level of replications for P2P storage system.

关键词： Churn Model Global Churn Pattern Peer-topeer DHT

作者: Qiuming Luo Yun Li Wentao Dong XiaoHui Lin

作者单位: National High Performance Computing Center College of Computer Science and Software Engineering 1She National High Performance Computing Center College of Computer Science and Software Engineering Shen National High Performance Computing Center College of Computer Science and Software Engineering Shen

会议类型: 国际会议

会议名称: 电子商务、工程及科学领域的分布计算和应用国际会议(DCABES 2010)

会议地点: 香港

会议语种:英文

页码: 241-245

在线出版日期: 2010-08-10（万方平台首次上网日期，不代表论文的发表时间）