NDLI: Modeling Unconnectable Peers in Private BitTorrent Communities

Content Provider	IEEE Xplore Digital Library
Author	Csernai, K. Jelasity, M. Pouwelse, J. Vinko, T.
Copyright Year	2011
Abstract	In a typical BitTorrent swarm, a large proportion of the peers are behind firewalls or NATs. These peers are called unconnectable. When developing P2P applications, a main requirement is to handle unconnectable peers appropriately. One important aspect of this problem, which has not been emphasized so far, is understanding the difference between the attributes of unconnectable peers and peers in the open Internet. For example, if unconnectable peers spend much less time online, or if they download significantly more, exploiting these facts helps to optimize the implementation, and ignoring these facts can even lead to severe performance problems. Comparing open and unconnectable peers is not easy because most traces contain no information about connect ability. Here we study two large traces collected in two private BitTorrent communities: FileList.org and BitSoup.org, both of which contain the connect ability attribute. From these traces we extract several attributes of individual online sessions, swarms, and users. We compare the distributions of these attributes over unconnectable and open peers. We find that there are some potentially important differences, e.g., unconnectable users tend to have a lot more sessions, and they tend to spend slightly more time online. Some of our findings are in contradiction with previous results that were based on a different trace collection methodology.
Starting Page	582
Ending Page	589
File Size	610104
Page Count	8
File Format	PDF
ISBN	9781424496822
ISSN	10666192
DOI	10.1109/PDP.2011.21
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2011-02-09
Publisher Place	Cyprus
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Databases Cleaning Communities Peer to peer computing Protocols Approximation methods HTML
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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