Corpus ID: 237562869

Heterogeneous download times in bandwidth-homogeneous BitTorrent swarms

  title={Heterogeneous download times in bandwidth-homogeneous BitTorrent swarms},
  author={Fabricio Murai and Antonio A. de A. Rocha and Daniel R. Figueiredo and Edmundo A. de Souza e Silva},
  • Fabricio Murai, Antonio A. de A. Rocha, +1 author Edmundo A. de Souza e Silva
  • Published 17 September 2021
  • Computer Science
  • ArXiv
Modeling and understanding BitTorrent (BT) dynamics is a recurrent research topic mainly due to its high complexity and tremendous practical efficiency. Over the years, different models have uncovered various phenomena exhibited by the system, many of which have direct impact on its performance. In this paper we identify and characterize a phenomenon that has not been previously observed: homogeneous peers (with respect to their upload capacities) experience heterogeneous download times. This… Expand


Heterogeneous download times in a homogeneous BitTorrent swarm
A mathematical model is developed that accurately predicts the heterogeneous download rates of the homogeneous peers as a function of their content and is applied to calculate lower and upper bounds to the number of departures that occur in a burst. Expand
Can identical BitTorrent peers experience different download times ?
Understanding and characterizing the performance of BitTorrent (BT) through mathematical models has been an active topic of research mainly due to its high complexity and tremendous practicalExpand
Analyzing and Improving a BitTorrent Networks Performance Mechanisms
A simulationbased study of BitTorrent is presented and it is confirmed that BitTorrent performs near-optimally in terms of uplink bandwidth utilization, and download time except under certain extreme conditions, and that the rate-based tit-for-tat policy is not effective in preventing unfairness. Expand
Performance analysis of BitTorrent-like systems with heterogeneous users
This paper proposes a mathematical model that accurately predicts the average file download delay in a heterogeneous BitTorrent-like system, and proposes a flexible token-based scheme that can be used to tradeoff between overall system performance and fairness to high bandwidth users, by properly setting its parameters. Expand
Characterization of BitTorrent swarms and their distribution in the Internet
This work provides a statistical characterization of the swarm sizes, the distribution of peers over autonomous systems (AS's), the fraction of peers in the largest AS, and the size of the shared files. Expand
Replication in bandwidth-symmetric BitTorrent networks
This paper aims to improve the performance of such networks with a novel mechanism for replication using so-called replicators, which replicate a subset of the files in the system, and shows that Replicated BitTorrent significantly improves download times in local bandwidth-symmetric BitTorrent networks. Expand
The effect of heterogeneous link capacities in BitTorrent-like file sharing systems
An analytical model referring to a simplified network model with access links belonging to two different capacity classes is developed and preliminary results seem to imply that bandwidth heterogeneity can have a positive effect on content propagation among peers. Expand
Service capacity of peer to peer networks
This work considers a transient regime which is key to capturing the ability of P2P file sharing systems to handle bursty traffic, e.g., flash crowds and finds that the average delays scale well in the offered load. Expand
Clustering and sharing incentives in BitTorrent systems
This paper presents the first detailed experimental investigation of the peer selection strategy in the popular BitTorrent protocol, and observes that BitTorrent's modified choking algorithmin seed state provides uniform service to all peers, and that an underprovisioned initial seed leads to absence of peer clustering and less effective sharing incentives. Expand
Content Availability and Bundling in Swarming Systems
This paper uses a model to quantify content availability in swarming systems and uses the model to analyze the availability and the performance implications of bundling, a strategy commonly adopted by many BitTorrent publishers today. Expand