Tag Archives: p2p

Videos

Spreading of a file in a P2P system

Spreading of a file in a P2P system

> By Matthieu Latapy and Abdelhamid Salah Brahim Download In a peer-to-peer (P2P) file exchange system, there is no central server that would store all available files and distribute them to users. Instead, the system self-organises in a way such that exchanges occur directly between users, between peers. Here we represent the spreading of a […]

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Plots

Typical days of search management for an eDonkey server

Typical days of search management for an eDonkey server

> By Frédéric Aidouni Using the data presented in the paper Ten weeks in the life of an eDonkey server we computed the number of queries of each type managed by the server each hour. For each hour, we then computed the ratio between the number of answers to source-search query divided by the number […]

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Papers

Ten weeks in the life of an eDonkey server

Frédéric Aidouni, Matthieu Latapy and Clémence Magnien

This paper presents a capture of the queries managed by an eDonkey server during almost 10 weeks, leading to the observation of almost 9 billion messages involving almost 90 million users and more than 275 million distinct files. Acquisition and management of such data raises several challenges, which we discuss as well as the solutions we developed. We obtain a very rich dataset, orders of magnitude larger than previously avalaible ones, which we provide for public use. We finally present basic analysis of the obtained data, which already gives evidence of non-trivial features.

Frédéric Aidouni, Matthieu Latapy and Clémence Magnien

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Plots

Paedophile keywords in eDonkey queries

Paedophile keywords in eDonkey queries

> By Raphaël Fournier and Guillaume Valadon On a P2P system, users submit keyword-based queries to a search engine. Some of them request paedophile content. This plot gives the distribution of the number of paedophile keywords contained in the queries sent to an eDonkey server during a ten-week experiment [1]. We plotted the number of […]

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Plots

Life duration of peers in a P2P system

Life duration of peers in a P2P system

> By Lamia Benamara and Clémence Magnien In a P2P system, we study the time users stay connected to the system, which we approximate by the time elapsed between the first and the last query made by a given user. This plot shows the inverse cumulative distribution of this life-duration: the x axis represents the […]

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Plots

Measurement of eDonkey Activity with Distributed Honeypots

Measurement of eDonkey Activity with Distributed Honeypots

> By Oussama Allali, Matthieu Latapy and Clémence Magnien We propose in Measurement of eDonkey Activity with Distributed Honeypots a new way to observe activity in a P2P system. It relies on a set of honeypost, i.e. fake peers which claim to provide some files and record the queries they receive for these files. These […]

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Plots

Files diffusion in a edonkey P2P system

Files diffusion in a edonkey P2P system

> By Abdelhamid Salah Brahim, Bénédicte Le Grand and Matthieu Latapy In the paper Ten Weeks in the Life of an eDonkey Server we present the capture of exchanges between a large eDonkey server and its clients during ten weeks in continuous, leading to the observation of approximately 80 million distinct clients and 275 million […]

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Papers

Measurement of eDonkey Activity with Distributed Honeypots

Oussama Allali, Matthieu Latapy and Clémence Magnien

Collecting information about user activity in peer-to-peer systems is a key but challenging task. We describe here a distributed platform for doing so on the eDonkey network, relying on a group of honeypot peers which claim to have certain files and log queries they receive for these files. We then conduct some measurements with typical scenarios and use the obtained data to analyze the impact of key parameters like measurement duration, number of honeypots involved, and number of advertised files. This illustrates both the possible uses of our measurement system, and the kind of data one may collect using it.

Oussama Allali, Matthieu Latapy and Clémence Magnien

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Plots

Relevance of observed properties

Relevance of observed properties

> By Matthieu Latapy and Clémence Magnien In practice, most complex networks are not directly available: we know them through a measurement procedure only. Such measurements generally give partial samples, which may moreover be biased. However, one generally assumes that the properties observed on the obtained samples are representative of the ones of the actual […]

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Plots

Time between queries in a P2P system

Time between queries in a P2P system

> By Lamia Benamara and Clémence Magnien 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) […]

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