http://research.microsoft.com/apps/pubs/default.aspx?id=72879
Without well-provisioned dedicated servers, modern fast-paced action games limit the number of players who can interact simultaneously to 16–32. This is because interacting players must frequently exchange state updates, and high player counts would exceed the bandwidth available to participating machines. In this paper, we describe Donnybrook, a system that enables epicscale battles without dedicated server resources, even in a fastpaced game with tight latency bounds. It achieves this scalability through two novel components. First, it reduces bandwidth demand by estimating what players are paying attention to, thereby enabling it to reduce the frequency of sending less important state updates. Second, it overcomes resource and interest heterogeneity by disseminating updates via a multicast system designed for the special requirements of games: that they have multiple sources, are latency-sensitive, and have frequent group membership changes. We present user study results using a prototype implementation based on Quake III that show our approach provides a desirable user experience. We also present simulation results that demonstrate Donnybrook’sefficacy in enabling battles of up to 900 players.
Here is the full paper.
http://research.microsoft.com/pubs/72879/donnybrook.pdf
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SIGCOMM’08, August 17–22, 2008, Seattle, Washington, USA.
Copyright 2008 ACM 978-1-60558-175-0/08/08 ...$5.00.
The paper is a great read. Very interesting. Thoughts? I am going to be reading it again and highlighting important segments and I will post them here in case anyone does not feel like reading the entire thing.
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