Virtual worlds, real traffic: interaction and adaptation
MMSys '10 Proceedings of the first annual ACM SIGMM conference on Multimedia systems
Bandwidth-aware peer-to-peer 3D streaming
Proceedings of the 8th Annual Workshop on Network and Systems Support for Games
Bandwidth-aware Peer-to-Peer 3D streaming
International Journal of Advanced Media and Communication
Network traces of virtual worlds: measurements and applications
MMSys '11 Proceedings of the second annual ACM conference on Multimedia systems
IEEE/ACM Transactions on Networking (TON)
Methods and network architecture for modifying extensible virtual environment to support mobility
Proceedings of the 15th International Academic MindTrek Conference: Envisioning Future Media Environments
Region- and action-aware virtual world clients
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP)
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We collected packet traces from Second Life client sessions and analyzed the packet contents. We observed that textures constitute a majority of the network traffic. We further characterized the textures from three selected regions in Second Life in terms of their size and spatial distributions. We found that textures in these regions exhibit a different size distribution from files on a file system or documents on the Web. We also verified the intuition that texture objects are spatially non-uniformly distributed. Surprisingly, we found that the selected Second Life regions can contain up to hundreds of megabytes of textures, and there exist locations in these regions that encompass a large portion of these textures within their area-of-interest. Our work motivates the need to manage textures carefully and efficiently in the design of networked virtual environments such as Second Life, and hints at the amount of storage and bandwidth required at a peer if peer-to-peer techniques are applied for texture caching. Our traces are useful for simulation studies and can lead to a model to generate realistic workload for networked virtual environments.