Lightweight emulation to study peer-to-peer systems

The current methods used to test and study peer-to-peer systems (namely modeling, simulation, or execution on real testbeds) often show limits regarding scalability, realism and accuracy. This paper describes and evaluates P2PLab, our framework to study peer-to-peer systems by combining emulation (use of the real studied application within a configured synthetic environment) and visualization. P2PLab is scalable (it uses a distributed network model) and has good visualization characteristics (many virtual nodes can be executed on the same physical node by using process-level visualization). Experiments with the BitTorrent file-sharing system complete this paper and demonstrate the usefulness of this platform.

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