Computer Science – Networking and Internet Architecture
Scientific paper
2007-10-01
Computer Science
Networking and Internet Architecture
10 pages, 8 figures
Scientific paper
In this paper, we present an analytical tool for understanding the performance of structured overlay networks under churn based on the master-equation approach of physics. We motivate and derive an equation for the average number of hops taken by lookups during churn, for the Chord network. We analyse this equation in detail to understand the behaviour with and without churn. We then use this understanding to predict how lookups will scale for varying peer population as well as varying the sizes of the routing tables. We then consider a change in the maintenance algorithm of the overlay, from periodic stabilisation to a reactive one which corrects fingers only when a change is detected. We generalise our earlier analysis to underdstand how the reactive strategy compares with the periodic one.
Aurell Erik
El-Ansary Sameh
Haridi Seif
Krishnamurthy Supriya
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