How to Survive and Thrive in a Private BitTorrent Community

Jia, Adele Lu; Chen, Xiaowei; Chu, Xiaowen; Pouwelse, Johan; Epema, Dick

doi:10.1007/978-3-642-35668-1_19

Cited by 6 publications

(4 citation statements)

References 10 publications

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“…Counter-intuitively, long seeding time does not necessary lead to high sharing ratio (or to be rich in the terminology of credit systems). This fact was demonstrated and possible strategies were discuseed in [11,12]. Incentive schemes in peer-to-peer communities based on credit have been proposed in many papers, e.g.…”

Section: Related Workmentioning

confidence: 95%

On the sustainability of credit-based P2P communities

Vinkó

Najzer

2015

Cent Eur J Oper Res

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Evidences show that besides their incredible performance, private BitTorrent communities which employ credit-based contribution incentives can also confront with system seize-up. Although the sustainability of these communities can be established in a wide range of system parameters, it is still not fully understood under what initial conditions can this be assured. In this paper, with the usage of extensive simulation results, we investigate the effects of the file size and the impact of initial credit amount distribution in order to deduce further conditions of sustainability.

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Section: Related Workmentioning

confidence: 95%

On the sustainability of credit-based P2P communities

Vinkó

Najzer

2015

Cent Eur J Oper Res

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“…The active torrents ratio is defined as the ratio of the number of active torrents to the total number of torrents in the community, and is widely used as a key performance indicator to evaluate the activity level and ranking of communities [Chen et al 2012;Jia et al 2013aJia et al , 2013bJia et al , 2014. Figure 14 compares the active torrents ratio of 16 Darknets and 2 public BTs over 60 days.…”

Section: Active Torrents Ratiomentioning

confidence: 99%

Dissecting Darknets

Chu

Chen

Jia

et al. 2014

ACM Trans. Internet Technol.

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BitTorrent (BT) plays an important role in Internet content distribution. Because public BTs suffer from the free-rider problem, Darknets are becoming increasingly popular, which use Sharing Ratio Enforcement to increase their efficiency. We crawled and traced 17 Darknets from September 2009 to February 2011, and obtained datasets about over 5 million torrents. We conducted a broad range of measurements, including traffic, sites, torrents, and users activities. We found that some of the features of Darknets are noticeably different from public BTs. The results of our study reflect both macroscopic and microscopic aspects of the overall ecosystem of BitTorrent Darknets.

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“…Thus, the basic design goal of SRE is to achieve higher system-wide download speed by encouraging users to contribute and therefore increasing the bandwidth supply. Several measurement studies have shown that SRE is very effective in incentivizing users to contribute [1,2,3,4,5]. For instance, [3] reports seeder-to-leecher ratios that are at least 9 times higher in private communities than in public ones, while download speeds are found to be 3-5 times higher.…”

Section: Introductionmentioning

confidence: 99%

“…We demonstrate the behavioral differences between users in different groups, we argue the reasons for these differences, and we show the positive and negative effects of these behaviors based on metrics including the seeding time, the upload speed, and the evolution of sharing ratio, which are highly related to user behaviors. Our previous work [5,6,7,8] has dealt with analyzing the advantages and disadvantages of SRE schemes based on theoretical models, simulations, and measurements. This paper complements these works by presenting observations from real world communities with a focus on the user behavior patterns.…”

Section: Introductionmentioning

confidence: 99%

User behaviors in private BitTorrent communities

Jia¹,

Chen²,

Chu³

et al. 2014

Computer Networks

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Many private BitTorrent communities employ Sharing Ratio Enforcement (SRE) schemes to incentivize users to contribute. It has been demonstrated that users in private communities are highly dedicated and that they seed much longer than users in communities where SRE is not employed. While most previous studies focus on showing the positive effect of user dedication in achieving high download speed, in this paper we explore the user behaviors in private communities, we argue the reasons for these behaviors, and we demonstrate both the positive and the negative effects of these behaviors. We show that under SRE, users seed for excessively long times to maintain required sharing ratios, but that their seedings are often not very productive (in terms of low upload speed) and that their long seeding times do not necessarily lead to large upload amounts. We find that as users evolve in the community, some users become more committed, in terms of increasing ratios between their seeding and leeching times. In the mean time, some users game the system by keeping risky and low sharing ratios while leeching more often than seeding. Based on these observations, we analyze strategies that alleviate the negative effects of these user behaviors from both the user's and the community administrator's perspective.

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How to Survive and Thrive in a Private BitTorrent Community

Cited by 6 publications

References 10 publications

On the sustainability of credit-based P2P communities

On the sustainability of credit-based P2P communities

Dissecting Darknets

User behaviors in private BitTorrent communities

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