Time between queries in a P2P system

> By Lamia Benamara and Clémence Magnien

Time between queries in a P2P system

Time between queries in a P2P system

This plot shows the distribution of the time elapsed between two successive queries made by a same peer in a P2P system, for a duration of one day. We observed 7 072 292 peers in total.

A very large fraction of these time intervals (more than one third) is equal to 0 (the corresponding peer made two queries in less than 1 second). We removed them to have a clearer view of the rest of the plot.

We observe that there are clear peaks at 60 second and at multiples of it (120, 240, 300, 900, 1500, 1800 second, and one hour). These peaks indicate that, though the peers decide which queries to make and when they make them, there is a strong influence of the protocol on the observed data: the client application most probably are programmed to launch periodical queries.

For more information, see our project on Measurement and Analysis of P2P Activity Against Paedophile Content.

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