Multiserver support for large-scale distributed virtual environments

CyberWalk is a distributed virtual walkthrough system that we have developed. It allows users at different geographical locations to share information and interact within a shared virtual environment (VE) via a local network or through the Internet. In this paper, we illustrate that as the number of...

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Bibliographic Details
Published in:IEEE transactions on multimedia 2005-12, Vol.7 (6), p.1054-1065
Main Authors: Ng, B., Lau, R.W.H., Si, A., Li, F.W.B.
Format: Article
Language:English
Subjects:
Adaptive region partitioning
Applied sciences
Boundaries
Computer science
control theory
systems
Computer simulation
Computer systems and distributed systems. User interface
distributed virtual environments
Exact sciences and technology
Image databases
Information geometry
Internet
IP networks
Large-scale systems
Multimedia
multiserver architecture
Network servers
Partitioning
Performance evaluation
Prefetching
Servers
Shape
Software
Spatial databases
Telecommunications
Telecommunications and information theory
Teleprocessing networks. Isdn
Virtual environment
Web server
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Summary:CyberWalk is a distributed virtual walkthrough system that we have developed. It allows users at different geographical locations to share information and interact within a shared virtual environment (VE) via a local network or through the Internet. In this paper, we illustrate that as the number of users exploring the VE increases, the server will quickly become the bottleneck. To enable good performance, CyberWalk utilizes multiple servers and employs an adaptive region partitioning technique to dynamically partition the whole VE into regions. All objects within each region will be managed by one server. Under normal circumstances, when a viewer is exploring a region, the server of that region will be responsible for serving all requests from the viewer. When a viewer is crossing the boundary of two or more regions, the servers of all the regions involved will be serving requests from the viewer since the viewer might be able to view objects within all these regions. This is analogous to evaluating a database query using a parallel database server, which could improve the performance of serving a viewer's request tremendously. We evaluate the performance of this multiserver architecture of CyberWalk via a detail simulation model.
ISSN:1520-9210
1941-0077
DOI:10.1109/TMM.2005.858388