Afforess/CraftBukkitPlusPlus — pull request #16 by oloflarsson (2012-02-26 01:48:30+00:00)
Title: A new option "chunkyFreezeTemperature"

With this option snow and ice form will be per chunk instead of block. This saves loads of CPU if used together with a high "aggregate-chunkticks". Downside is edges of cold biomes will look chunky as ice and snow behaves that way.