NoiseThreader

Standard noise generators perform their costly height-map and terrain calculations only on the main server thread while chunks are generated. NoiseThreader splits those calculations and distributes the load across multiple threads, which can reduce the time each new chunk takes. The gain depends on the hardware, so results differ between systems.

The mod adds multi-threading to the noise generators of the vanilla Overworld, End and Nether, as well as the Overworld generator of OpenTerrainGenerator and the cave carver of YUNG's BetterCaves. Profiling reported about a 50% improvement for the vanilla Overworld and near 60% for OpenTerrainGenerator, whose heavier generation benefits more. The Nether and End gain less, roughly 10%, because they use smaller noise generations. The mod is server-side only, so players join without installing it, and it is published for Forge 1.12.2 only. Multi-threading starts only when a machine has at least a minimum core count, which defaults to 4 as a safety margin.