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BlueBanana: resilience to avatar mobility in distributed MMOGs.
Résumé:
Massively Multiplayer Online Games
(MMOGs) recently emerged as a popular class of applications with
millions of users. To offer acceptable gaming experience, such
applications need to render the virtual world surrounding the
player with a very low latency. However, current stateof-
the-art MMOGs based on peer-to-peer overlays fail to satisfy
these requirements. This happens because avatar mobility implies
many data exchanges through the overlay. As state-of-the-art
overlays do not anticipate this mobility, the needed data is not
delivered on time, which leads to transient failures at the
application level. To solve this problem, we propose Blue
Banana, a mechanism that models and predicts avatar movement,
allowing the overlay to adapt itself by anticipation to the MMOG
needs. Our evaluation is based on large-scale traces derived
from Second life. It shows that our anticipation mechanism
decreases by 20% the number of transient failures with only a
network overhead of 2%.