Technical Report: DCC-2010-02
On the Impact of Fault-Tolerance Mechanisms in a Peer-to-Peer Middleware
Rolando Martins
EFACEC / CRACS & INESC-Porto
E-mail: rolando.martins@efacec.com
Priya Narasimhan
Carnegie Mellon University
E-mail: priya@cs.cmu.edu
Luís Lopes, Fernando M. Silva
CRACS & INESC-Porto/DCC-FCUP
E-mail: {lblopes,fds}@dcc.fc.up.pt
April 2010
Abstract
We address the problem of integrating real-time fault-tolerance
mechanisms into peer-to-peer systems, with specific architecture and
deployment constraints. For this purpose we implemented a prototype
hierarchical peer-to-peer framework in which the leaf peers are
sensors that generate different kinds of traffic such as mesh
management, events, video and audio. We evaluate the framework by
measuring packet loss, response time, jitter and mesh overhead for
each type of traffic under peer failure. We report significant gains
in QoS for all types of traffic, when using the fault-tolerance
mechanisms, with minimal response time and mesh management overhead.
