Abstract
We propose a multiclass fluid model for BitTorrent-like content-distribution systems. The new model can model heterogeneous peers, in which peers have different access bandwidths. The model can also model BitTorrent-like systems which provide differential service (for example, first class and second class service) to the participating peers. The fluid model leads to a non-linear system of differential equations with special structure. For the service differentiation problem, we prove that the system of differential equations admits a unique stable equilibrium, that we compute in closed-form. We also provide the average download times for both classes. For the bandwidth diversity problem, we show that the system of differential equations has a stable state that may depend on the initial conditions. We compute the average download time of both classes for each reachable steady-state.
Original language | English (US) |
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Pages (from-to) | 32-49 |
Number of pages | 18 |
Journal | Performance Evaluation |
Volume | 62 |
Issue number | 1-4 |
DOIs | |
State | Published - Oct 2005 |
Keywords
- Bandwidth heterogeneity
- Content distribution
- Fluid models
- P2P networks
- Service differentiation
- Switched linear systems
ASJC Scopus subject areas
- Software
- Modeling and Simulation
- Hardware and Architecture
- Computer Networks and Communications