The primary properties of the existing large scale peer-to-peer system include very high heterogeneity and dynamic nature of the participating peers in the network. Properties of peers such as peer session length, accessible bandwidth, storage space are highly varied with small set of peers controlling large part of the total system resources which results in low performance of the system. The ...

Efficient and effective routing of content-based queries is an emerging problem in peer-to-peer networks, and can be seen as an extension of the traditional “resource selection” problem. Although some approaches have been proposed, finding the best architecture (defined by the network topology, the underlying selection method, and its integration into peer-to-peer networks) is still an open pro...

Peer-to-Peer (P2P) systems are self-organized and decentralized. However, the mechanism of a peer randomly joining and leaving a P2P network causes topology mismatching between the P2P logical overlay network and the physical underlying network. The topology mismatching problem brings great stress on the Internet infrastructure and seriously limits the performance gain from various search or ro...

Peer-to-peer networking is a hot buzzword that has been sweeping through the computing industry over the past year or so. Gnutella, as one of the first operational pure P2P systems, is considered as an important case study for P2P networking. By analyzing the Gnutella network topology data, we can discover both the small diameter and the clustering properties characteristic of "small-world" net...

Interactions within Multi-agent systems can be structured in different ways depending on the application scenario and its environmental restrictions. In previous work we have developed a multi-agent system within a Peer-to-Peer (P2P) sharing data network scenario. Its design includes an organisation that structures agents’ interactions and an abstract architecture (2-LAMA) that helps to improve...

This paper is concerned with the effect of overlay network topology on the performance of live streaming peer-to-peer systems. The paper focuses on the evaluation of topologies which are aware of the delays experienced between different peers on the network. Metrics are defined which assess the topologies in terms of delay, bandwidth usage and resilience to peer drop-out. Several topology creat...

A generic linear mathematical model is proposed to represent the dynamics of bandwidth usage, network topology, and host processing power in large scale Peer-to-Peer (P2P) networks. Feedback control theory is employed to analyze system stability and query controllability, as well as deriving an explicit solution for the bandwidth usage. The proposed model and analysis methods can be applied to ...

A significant part of the Internet traffic today is generated by peer-to-peer (P2P) applications used originally for file sharing, and more recently for real-time communications and live media streaming. Such applications discover a route to each other through an overlay network with little knowledge of the underlying network topology. As a result, they may choose peers based on information ded...

Unstructured overlay networks are driven by simple protocols that are easy to analyze and implement. The lack of structure, however, leads to weak message delivery guarantees and poor scaling. Structured overlays impose a global overlay topology that is then maintained by all peers in a complex protocol. In contrast to unstructured approaches the structured overlays are efficient and scalable, ...

The Peer-to-Peer (P2P) technology has many potential advantages, including high scalability and cost-effectiveness. However, most P2P system performance suffers from the mismatch between the overlays topology and the underlying physical network topology, causing a large volume of redundant traffic in the Internet. A lot of research works have been presented to address this issue, but most resul...