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... the internal buzz Podcasting Join the Doors Campaign Bittorrent Don't panic More Clicks Photo Blogging Video ...
2006 - Gale Group | Sunday Times HA GDA
Zhen Ma, Ke Xu, Jiangchuan Liu, Haiyang Wang,
BitTorrent is one of the most popular Peer-to-Peer (P2P) applications for file sharing over the ... up a large proportion of space among the BitTorrent shared files. Recently, BitTorrent has attracted researchers’ interests, as an alternative method ... service. In this paper, we concentrate on enabling BitTorrent to support VoD service in existing swarms while ... We first examine the content properties of the BitTorrent system to explore the demands and challenges of VoD service in BitTorrent swarms. The efficiency of BitTorrent for various piece ...
Tópico(s): Internet Traffic Analysis and Secure E-voting
2011 - Elsevier BV | Computer Networks
Boxun Zhang, Alexandru Iosup, Johan Pouwelse, Dick Epema, Henk Sips,
... the characteristics and in improving the operation of BitTorrent, which is currently a popular Internet application. Much ... the Internet, the complexity and scale of the BitTorrent network make a single, complete measurement impractical. While ... employed diverse sampling techniques to study parts of BitTorrent network, until now there exists no investigation of ... their ability to objectively represent the characteristics of BitTorrent. In this work we present the first study of the sampling bias in BitTorrent measurements. We first introduce a novel taxonomy of ...
Tópico(s): Caching and Content Delivery
2010 - Springer Science+Business Media | Lecture notes in computer science
Dave Levin, Katrina LaCurts, Neil Spring, Bobby Bhattacharjee,
Incentives play a crucial role in BitTorrent, motivating users to upload to others to achieve fast download times for all peers. Though long believed to be robust to strategic manipulation, recent work has empirically shown that BitTorrent does not provide its users incentive to follow ... auction-based model to study and improve upon BitTorrent's incentives. The insight behind our model is that BitTorrent uses, not tit-for-tat as widely believed, ... For example, our analysis demonstrates, counter-intuitively, that BitTorrent peers have incentive to intelligently under-report what ...
Tópico(s): Internet Traffic Analysis and Secure E-voting
2008 - Association for Computing Machinery | ACM SIGCOMM Computer Communication Review
Produção Nacional
Revisado por pares
Nazareno Andrade, Elizeu Santos‐Neto, Francisco Brasileiro, Matei Ripeanu,
BitTorrent is a widely popular peer-to-peer content distribution protocol. Unveiling patterns of resource demand and ... is paramount to inform operators and designers of BitTorrent and of future content distribution systems. This study examines three BitTorrent content-sharing communities regarding resource demand and supply. ... characterization is significantly broader and deeper than previous BitTorrent investigations: it compares multiple BitTorrent communities and investigates aspects that have not been ...
Tópico(s): Advanced Data Storage Technologies
2008 - Elsevier BV | Computer Networks
Lei Guo, S. Chen, Zhen Xiao, Erna Tan, Xiaoning Ding, Xilin Zhang,
This paper presents a performance study of BitTorrent-like P2P systems by modeling, based on extensive measurements and trace analysis. Existing studies on BitTorrent systems are single-torrent based and usually assume ... torrent is Poisson-like. However, in reality, most BitTorrent peers participate in multiple torrents and file popularity changes over time. Our study of representative BitTorrent traffic provides insights into the evolution of single- ... and several new findings regarding the limitations of BitTorrent systems: (1) Due to the exponentially decreasing peer ...
Tópico(s): Advanced Data Storage Technologies
2007 - Institute of Electrical and Electronics Engineers | IEEE Journal on Selected Areas in Communications
... server architecture.P2P systemsthat are based on the BitTorrent protocol uses end-users' resources to provide a ... bandwidth intensive content to thousands of users.The BitTorrent protocol system offers a scalable mechanism for distributing ... growing demand for file sharing and content distribution, BitTorrent has become one of the most popular Internet ... Internet traffic.With the wide usage of the BitTorrent protocol system, it has basically solved one of ... group of interested parties.The strength of the BitTorrent protocol lies in efficient bandwidth utilization for the ...
Tópico(s): Network Traffic and Congestion Control
2012 - | International journal of Computer Networks & Communications
Matteo Varvello, Moritz Steiner,
BitTorrent is currently the dominant Peer-to-Peer (P2P) protocol for file-sharing applications. BitTorrent is also a nightmare for ISPs due to ... community has deployed a number of strategies for BitTorrent traffic localization, mostly relying on the communication between ... peers and a central server called tracker. However, BitTorrent users have been abandoning the trackers in favor ... claim. We monitor during four consecutive days the BitTorrent traffic (both tracker-based and DHT-based) within ... the first traffic localization mechanism for DHT-based BitTorrent networks.
Tópico(s): Internet Traffic Analysis and Secure E-voting
2011 - Springer Science+Business Media | Lecture notes in computer science
Raymond Lei Xia, Jogesh K. Muppala,
Since its inception, BitTorrent has proved to be the most popular approach for sharing large files using the peer-to-peer paradigm. BitTorrent introduced several innovative mechanisms such as tit-for- ... participating peers. Several studies examining the performance of BitTorrent and its mechanisms have been published in the ... we present a survey of performance studies of BitTorrent from 2003 to 2008. We categorize these studies ... the mechanisms studied and the resulting observations about BitTorrent performance. Many of the performance studies also suggested ...
Tópico(s): Advanced Data Storage Technologies
2010 - Institute of Electrical and Electronics Engineers | IEEE Communications Surveys & Tutorials
BitTorrent has emerged as a very popular peer-to-peer file sharing system, which uses an embedded ... to encourage contribution and prevent free-riding. However, BitTorrent's ability to prevent free-riding needs further ... to capture the effect of free-riding on BitTorrent-like systems. With the model, we find that BitTorrent's incentive mechanism is successful in preventing free- ... of seeds. The reason for this is that BitTorrent does not employ any effective mechanisms for seeds ... propose a seed bandwidth allocation strategy for the BitTorrent system to reduce the effect of seeds on ...
Tópico(s): Advanced Data Storage Technologies
2008 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Parallel and Distributed Systems
Baohua Wei, Gilles Fedak, Franck Cappello,
... data. This paper presents an evaluation of the BitTorrent protocol for computational desktop grids. We first present ... we conduct experiments to evaluate the potential of BitTorrent compared to a classical approach based on FTP ... 65-node cluster measure the basic characteristics of BitTorrent in terms of latency and bandwidth and evaluate the scalability of BitTorrent for the delivery of large input files. Moreover, we show that BitTorrent has a considerable latency overhead compared to FTP ... nodes. Tests on a synthetic application show that BitTorrent significantly increases the communication/computation ratio of the ...
Tópico(s): Advanced Data Storage Technologies
2007 - Elsevier BV | Future Generation Computer Systems
M. Meulpolder, Dick Epema, Henk Sips,
The popular and well-known BitTorrent peer-to-peer protocol offers fast file distribution in a highly scalable way. Several studies have investigated the properties of this ... however, we focus on the usage of the BitTorrent protocol in homogeneous local environments with symmetric bandwidth ... a traditional client-server setup, the use of BitTorrent in such settings can offer huge benefits in ... system. A mathematical model of the resulting Replicated BitTorrent is presented and validated by emulation. Furthermore, we ...
Tópico(s): Opportunistic and Delay-Tolerant Networks
2008 - Institute of Electrical and Electronics Engineers | Proceedings - IEEE International Parallel and Distributed Processing Symposium
Ahmed Q. Lawey, Taisir E. H. El-Gorashi, Jaafar M. H. Elmirghani,
... this paper, we extend our previous study on BitTorrent, the most popular peer-to-peer (P2P) protocol, ... energy consumption of our previously proposed energy efficient BitTorrent protocol to that of the original BitTorrent protocol and the client-server (C-S) schemes ... for a certain swarm size, the energy efficient BitTorrent protocol achieves higher power savings in networks with ... Second, we extend our previously developed energy efficient BitTorrent heuristic enhancing its performance by allowing peers to ...
Tópico(s): Image and Video Quality Assessment
2014 - Institute of Electrical and Electronics Engineers | Journal of Lightwave Technology
Michal Kryczka, Rubén Cuevas, Carmen Guerrero, Arturo Azcorra, √Ångel Cuevas,
BitTorrent is the most successful peer-to-peer application. In the last years the research community has studied the BitTorrent ecosystem by collecting data from real BitTorrent swarms using different measurement techniques. In this article ... Finally, complementary techniques utilize recent extensions to the BitTorrent protocol in order to obtain both aggregated and ... by the research community to accurately measure the BitTorrent ecosystem such as accurately identifying peers and estimating ...
Tópico(s): Internet Traffic Analysis and Secure E-voting
2011 - Institute of Electrical and Electronics Engineers | IEEE Communications Magazine
Georgos Siganos, Josep M. Pujol, Pablo Rodríguez,
Detecting clients with deviant behavior in the Bittorrent network is a challenging task that has not received the deserved attention. Typically, this question is seen as not ’politically’ correct, since it ... the controversial issue of detecting agencies that monitor Bittorrent for copyright infringement. However, deviant behavior detection and ... might prove crucial for the well being of Bittorrent as there are other deviant entities in Bittorrent besides monitors. Our goal is to provide some ... Bay. We show that the empirical observation of Bittorrent clients can be used to detect deviant behavior, ...
Tópico(s): Spam and Phishing Detection
2009 - Springer Science+Business Media | Lecture notes in computer science
Mohamed Karim Sbai, Chadi Barakat, Jaeyoung Choi, Anwar Al Hamra, Thierry Turletti,
BitTorrent is one of the Internet's most efficient content distribution protocols. It is known to perform ... resources and their shared nature, which make running BitTorrent with its default configuration not lead to best ... this work that the neighbor selection mechanism in BitTorrent plays an important role in determining the performance ... from these impairments, we propose an enhancement to BitTorrent which aims to minimize the time to download ... 2 simulations, we show that these enhancements to BitTorrent significantly improve the file completion time while fully ...
Tópico(s): Peer-to-Peer Network Technologies
2008 - Springer Science+Business Media | Lecture notes in computer science
In a large-scale BitTorrent-like peer-to-peer file sharing system, the track server could be overloaded to update the state information of constantly ... We achieve this by constructing the CBT (Clustered BitTorrent) system with two novel algorithms: a peer joining ... of the proposed CBT system with a original BitTorrent system. With this model, we find that the ... system achieves better results than a randomly organized BitTorrent network, improving the system scalability and efficiency while retaining the robustness and incentives of the original BitTorrent paradigm.
Tópico(s): Opportunistic and Delay-Tolerant Networks
2007 - Elsevier BV | Computer Communications
BitTorrent is arguably the most popular media file distribution protocol used in Internet today. Even though empirically BitTorrent seems to be both efficient and scalable, there ... is to answer the question of how close BitTorrent is to the optimum, and indirectly how much ... distribution task, and perform a comprehensive comparison between BitTorrent with CSFD . In addition, we compare several peer selection algorithms and analyze the applicability of BitTorrent to real-time streaming applications.
Tópico(s): Network Traffic and Congestion Control
2006 - SPIE | Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE
Cebrail Çiflikli, Ali Gezer, A. Tuncay Özşahin, Öznur Özkasap,
At present, BitTorrent protocol packets constitute a large part of peer-to-peer application traffic on the Internet. Due to the increasing amount of BitTorrent traffic, it has become inevitable to take into ... its effects on network management. Generally, studies on BitTorrent traffic measurement have involved analysis with packets transmitted ... IPv6. In this study, we investigate the IPv6 BitTorrent packet traffic characteristics in terms of autocorrelation, power ... also perform distribution modeling for IPv4 and IPv6 BitTorrent packet traffic. With these models, efficient packet traffic ...
Tópico(s): Peer-to-Peer Network Technologies
2010 - Elsevier BV | Simulation Modelling Practice and Theory
... peer-to-peer file-sharing medium is the BitTorrent protocol. While BitTorrent itself is not illegal, many of its users ... holders enforce their rights by suing numerous infringing BitTorrent users in a single mass lawsuit. Because the ... INTRODUCTIONThis year, thousands of alleged users1 of the BitTorrent peer-to-peer file-sharing protocol will open ... alleged infringers. Since mid-2010, over 220,000 BitTorrent users have been targeted in this manner.4The ... that all the listed John Does have used BitTorrent to infringe its copyright.5 Then the plaintiffmoves ...
Tópico(s): Legal Systems and Judicial Processes
2012 - University of Michigan Law School | Michigan Law Review
Fernando Costa, Luis Silva, Gilles Fedak, Ian Kelley,
In this paper we show how we applied BitTorrent data distribution techniques to the BOINC middleware. Our ... achieve this, we developed a prototype that adds BitTorrent functionality for task distribution and conducted small- scale ... environment. Additionally, we measured the impact of the BitTorrent components in both the BOINC client and server, ... original implementation. Our preliminary results indicate that the BitTorrent client had a negligible influence on the BOINC ... spikes on CPU usage. Current results show the BitTorrent scenario allows clients to share the burden of ...
Tópico(s): Distributed and Parallel Computing Systems
2008 - Institute of Electrical and Electronics Engineers | Proceedings - IEEE International Parallel and Distributed Processing Symposium
Mikel Izal, Guillaume Urvoy-Keller, Ernst W. Biersack, Pascal Felber, Anwar Al Hamra, Luis Garcés-Erice,
... clients and servers. In this paper, we study BitTorrent, a new and already very popular peer-to- ... a large set of hosts. Our analysis of BitTorrent is based on measurements collected on a five ... assess the performance of the algorithms used in BitTorrent through several metrics. Our conclusions indicate that BitTorrent is a realistic and inexpensive alternative to the ...
Tópico(s): Advanced Data Storage Technologies
2004 - Springer Science+Business Media | Lecture notes in computer science
Rafit Izhak-Ratzin, Hyunggon Park, Mihaela van der Schaar,
We propose a BitTorrent-like protocol based on an online learning (reinforcement learning) mechanism, which can replace the peer selection mechanisms in the regular BitTorrent protocol. We model the peers' interactions in the BitTorrent-like network as a repeated stochastic game, where ... proposed mechanism and incorporated it into an existing BitTorrent client. Our experiments performed on a controlled Planetlab ... by 64 percent as compared to the regular BitTorrent protocol.
Tópico(s): Access Control and Trust
2012 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Parallel and Distributed Systems
Lucia D’Acunto, Nitin Chiluka, Tamás Vinkó, Henk Sips,
... large-scale. In particular, the high efficiency of BitTorrent has inspired many P2P protocols for VoD. However, ... use different approaches to adapt the design of Bittorrent to VoD, and in most cases their performance ... show that, despite their considerable differences: (i) existing BitTorrent-like VoD approaches all share some characteristics, such ...
Tópico(s): Internet Traffic Analysis and Secure E-voting
2013 - Elsevier BV | Computer Networks
John S. Otto, Mario A. Sánchez, David Choffnes, Fabián E. Bustamante, Georgos Siganos,
... which that traffic flows. In the case of BitTorrent, however, previous studies have been limited by narrow ... analysis. This paper presents a comprehensive view of BitTorrent, using data from a representative set of 500, ... system. For instance, over the past year total BitTorrent traffic has increased by 12% , driven by 25% ... across access links, this has potential implications on BitTorrent-associated costs for Internet Service Providers (ISPs). Using ... burstable (95th-percentile) billing model. Last, when examining BitTorrent traffic's paths, we find that for over ...
Tópico(s): Internet Traffic Analysis and Secure E-voting
2011 - Association for Computing Machinery | ACM SIGCOMM Computer Communication Review
Tobias Hoßfeld, Frank Lehrieder, David Hock, Simon Oechsner, Zoran Despotovic, Wolfgang Kellerer, Maximilian Michel,
... of overlay traffic resulting from applications such as BitTorrent is a challenge addressed by several recent research ... a considerable set of works measuring real-life BitTorrent swarms, several characteristics of those swarms relevant for ... design and the assessment of ALTO solutions for BitTorrent, but the applicability of the results is not ...
Tópico(s): Cooperative Communication and Network Coding
2010 - Elsevier BV | Computer Networks
Chao Zhang, Prithula Dhungel, Di Wu, Keith W. Ross,
BitTorrent is the most successful open Internet application for content distribution. Despite its importance, both in terms ... influence it has on emerging P2P applications, the BitTorrent Ecosystem is only partially understood. We seek to ... a nearly complete picture of the entire public BitTorrent Ecosystem. To this end, we crawl five of ...
Tópico(s): Advanced Data Storage Technologies
2010 - Institute of Electrical and Electronics Engineers | IEEE Transactions on Parallel and Distributed Systems
Cameron Dale, Jiangchuan Liu, Joseph G. Peters, Bo Li,
... underlying topologies of multiple complex networks formed in BitTorrent swarms. Our results demonstrate that the networks exhibit ... These results suggest an interesting venue for improving BitTorrent's performance. We present a first attempt to introduce clustering into BitTorrent. Our approach is theoretically proven and makes minimal ...
Tópico(s): Complex Network Analysis Techniques
2008 - Institute of Electrical and Electronics Engineers | International Workshop on Quality of Service
... the tit-for-tat strategy used in the BitTorrent protocol. Although this game theoretical scheme provides an ... rates only. We compare both pricing schemes with BitTorrent in simulations of static and dynamic networks. In BitTorrent peers receive different download rates even if they ... than what they contribute. The pricing algorithms outperform BitTorrent with respect to fairness. With both algorithms a ...
Tópico(s): Gambling Behavior and Treatments
2007 - Elsevier BV | Computer Communications
Wei-Cherng Liao, Fragkiskos Papadopoulos, Konstantinos Psounis,
Among all peer-to-peer (P2P) systems, BitTorrent seems to be the most prevalent one. This success has drawn a great deal of research interest on the system. In particular, there ... the average file download delay in a heterogeneous BitTorrent-like system. Our model is quite general, has ... we propose a flexible token-based scheme for BitTorrent-like systems that can be used to tradeoff ...
Tópico(s): Gambling Behavior and Treatments
2007 - Elsevier BV | Performance Evaluation