Summary: A File­Centric Model for Peer­to­Peer File Sharing Systems 
Li Zou Mostafa H. Ammar
College of Computing, Georgia Institute of Technology
Atlanta, GA 30332
fzou, ammarg@cc.gatech.edu
Abstract
Peer­to­peer systems have quickly become a popu­
lar way for file sharing and distribution. In this pa­
per, we focus on the subsystem consisting of peers and
their actions relative to a specific file and develop a
simple theoretical file­centric model for the subsystem.
We begin with a detailed model that tracks the com­
plete system state. To deal with the large system state
space, we investigate a decomposed model, which not
only greatly reduces the complexity of solving the sys­
tem, but also provides a flexible framework for modeling
multiple classes of peers and new system features. Us­
ing the model, we can study performance measures of
a system, such as throughput, success probability of a
file search, and number of file replicas in the system.

Source: Ammar, Mostafa - College of Computing, Georgia Institute of Technology

Collections: Computer Technologies and Information Sciences