Efficient simulation of large-scale p2p networks

Eger, Kolja; Hoßfeld, Tobias; Binzenhöfer, Andreas; Kunzmann, Gerald

doi:10.1145/1272980.1272986

Cited by 65 publications

(53 citation statements)

References 10 publications

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“…[8], which uses the ns-2 simulation system. In addition to implementing the new protocol, we also needed to modify and add several features to the original system.…”

Section: Simulation Frameworkmentioning

confidence: 99%

Bursty content sharing mechanism for energy-limited mobile devices

Kelényi

Nurminen

2009

Proceedings of the 4th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks

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The strategy to send data in high speed bursts has been observed to be useful for energy-efficient communication of wireless applications. In this paper we investigate how to apply this approach to peer-to-peer (P2P) content sharing. Our main focus is on battery savings that can be achieved by properly shaping the traffic at the application level. Our primary target is BitTorrent based content sharing on mobile phones connected with 3G cellular networks. However, the results also apply to WLAN communication as well as to other energy-limited devices in addition to mobile phones. We propose a novel BitTorrent extension and evaluate it via flow-level simulations. In comparison to standard BitTorrent, the energy-limited peers can achieve 50% energy savings without significantly affecting the download speeds of regular peers.

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“…[8], which uses the ns-2 simulation system. In addition to implementing the new protocol, we also needed to modify and add several features to the original system.…”

Section: Simulation Frameworkmentioning

confidence: 99%

Bursty content sharing mechanism for energy-limited mobile devices

Kelényi

Nurminen

2009

Proceedings of the 4th ACM Workshop on Performance Monitoring and Measurement of Heterogeneous Wireless and Wired Networks

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“…We started with the BitTorrent packet-level simulation model developed by Eger et al [7]. The model by Eger et al includes an underlying TCP model that is part of ns-2.…”

Section: Simulation Evaluationmentioning

confidence: 99%

A Simulation Study of a New Green BitTorrent

Blackburn

Christensen

2009

2009 IEEE International Conference on Communications Workshops

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Abstract-The use of P2P technologies, such as BitTorrent, to distribute legal content to consumers is actively being explored as a means of reducing both file download times and the energy consumption of data centers. This approach pushes the energy use out of the data centers and into the homes of content consumers (who are also then content distributors). The current BitTorrent protocol requires that clients must be fully poweredon to be participating members in a swarm. In this paper, we show that simple changes to the BitTorrent protocol, including long-lived knowledge of sleeping peers and a new wake-up semantic, can enable clients to sleep when not actively downloading or uploading yet still be responsive swarm members. Using ns-2 we simulate a green BitTorrent swarm. We show that significant energy savings are achievable with only a small performance penalty in increased file download time.

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“…We consider access link bandwidths and model the block transfers as flows. As discussed in Eger et al (2007), packet-level simulations are seldom used for P2P networks due to their high complexity. Differences between packetlevel and flow-level (application-layer) simulation models for BitTorrent-like P2P systems are discussed and comparison is performed with the analytical models in Eger et al (2007).…”

Section: Simulation Modelmentioning

confidence: 99%

“…As discussed in Eger et al (2007), packet-level simulations are seldom used for P2P networks due to their high complexity. Differences between packetlevel and flow-level (application-layer) simulation models for BitTorrent-like P2P systems are discussed and comparison is performed with the analytical models in Eger et al (2007). The findings show that the results for the flow-level simulations of BitTorrent are near to the optimal values meaning that the flowlevel protocol model works efficiently.…”

Section: Simulation Modelmentioning

confidence: 99%

“…To be precise, the block download time is determined by the upload capacity of the sender and the download capacity of the receiver. This is a reasonable and common assumption as discussed in Eger et al (2007) considering the fact that majority of the peers are home users connected to the Internet with DSL or cable modems. We also consider a fluid model for connections which assumes that the flows through a link share the link bandwidth equally.…”

Section: Simulation Modelmentioning

confidence: 99%

See 1 more Smart Citation

Principles and performance analysis of SeCond: A system for epidemic peer-to-peer content distribution

Özkasap

Çaǧlar

Alagöz

2009

Journal of Network and Computer Applications

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a b s t r a c tWe propose and design a peer-to-peer system, SeCond, addressing the distribution of large sized content to a large number of end systems in an efficient manner. In contrast to prior work, it employs a self-organizing epidemic dissemination scheme for state propagation of available blocks and initiation of block transmissions. In order to exploit heterogeneity of peers, enhance the utilization of system resources and for the ease of deployment, scalability, and adaptivity to dynamic peer arrivals/ departures, we propose mechanisms for adjusting protocol parameters dynamically according to the bandwidth usages. We describe design and analysis details of our protocol SeCond. Comprehensive performance evaluations and comparison with the BitTorrent system model have been accomplished for a wide range of scenarios. Performance results include scalability analysis for different arrival/departure patterns, flash-crowd scenario, overhead analysis, and fairness ratio. The major metrics we study include the average file download time, load on the primary seed, uplink/downlink utilization, and communication overhead. We show that SeCond is a scalable and adaptive protocol which takes the heterogeneity of the peers into account. The protocol is as fair as BitTorrent although it has no explicit strategy addressing free-riding. We also illustrate the applicability of an analytical fluid model to the behavior of SeCond.

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Efficient simulation of large-scale p2p networks

Cited by 65 publications

References 10 publications

Bursty content sharing mechanism for energy-limited mobile devices

Bursty content sharing mechanism for energy-limited mobile devices

A Simulation Study of a New Green BitTorrent

Principles and performance analysis of SeCond: A system for epidemic peer-to-peer content distribution

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