Prenoiser
by ar4nova
Prenoiser lets a Fabric server generate terrain noise for chunks beyond the normal render distance ahead of players, so they load faster when they arrive.
What it does
Prenoiser pre-generates noise for chunks outside the area that players render at full detail. Its extendrange setting runs from 0 to 128, a default extend range covers 8 chunks beyond the render distance, and setting it to 0 disables the feature. A command with status, noiseculling and cullingtype arguments controls the process; culling can be set to split or front, and a progress view shows estimated completion time.
The mod does not change the vanilla noise system for chunks. Its noise work costs CPU time, since the server has to remap noises and calculate ranges, so the process trades processing load for shorter waits. The author recommends pairing it with C2ME's OpenCL acceleration, which speeds up noise generation and cuts the CPU time spent waiting on it. A command requires operator level 2.
Prenoiser is published for Fabric only, in 1.0.0 for 1.21.11 as an alpha build, with files for 1.21.10 and 1.21.11 as game versions. It is server-side only, so players join without installing it. The mod is released under the GNU General Public License v3.0 only and is open source.
Key features
Noise pre-generation
Noise is generated for chunks outside the full-detail render area before players reach them.
Adjustable extend range
The extendrange value sets how far past the render distance pre-generation reaches, from 0 to 128 chunks.
Noise culling options
The noiseculling flag and cullingtype setting, split or front, control which generated noise is kept.
Progress reporting
A status view shows the noise progress and an estimated time to completion, so the operator can follow the work.
Gallery
Compatibility
Latest build for each game version and loader.
Only full game releases are shown. This mod publishes no snapshot builds.
Use cases
Who it’s for: Server owners and operators who run Fabric servers with a large render distance and have spare CPU capacity for terrain generation.
How it compares
Cobbleboost is a Fabric mod for 1.21.1 under the MIT License, client-side only and not open source, so it changes only the player's game. Gpu Cpu Util is client-side only too, is open source under the MIT License and covers 1.21 – 1.21.11. GPU servers runs on the server side only, on Fabric for 1.21.8 – 1.21.11, and is not open source. Prenoiser is the one here that runs on the server, while the others change the client.
| Mod | Loaders | Game versions | Environment | Updated |
|---|---|---|---|---|
| Prenoiser | Fabric | 1.21.10 – 1.21.11 | Server-side only | 2025-12-29 |
| Cobbleboost | Fabric | 1.21.1 | Client-side only | 2026-09-13 |
| Gpu Cpu Util | Fabric | 1.21 – 1.21.11 | Client-side only | 2026-01-09 |
| GPU servers | Fabric | 1.21.8 – 1.21.11 | Server-side only | 2026-08-27 |
Questions
Does Prenoiser need to be installed on players' clients?
Does Prenoiser change how vanilla noise generation works?
Which command controls Prenoiser?
In the catalog
Prenoiser is one of 3,545 Optimization mods on ModsFinder, and one of 2,575 Optimization mods for Fabric. 19,862 mods support Minecraft 1.21.11.
Similar mods
What the author says
{-} RECOMMENDED USING C2ME OPENCL ACCELERATION. Prenoiser generate noise where outside of render distance. Using C2ME OpenCL allow generate noises more faster, making cut time of CPU waiting for noises.
Official listing
- Modrinth page
- modrinth.com/mod/prenoiser
- Owner
- ar4nova
- Published
- 2025-12-29
- Updated on Modrinth
- 2025-12-29
- Facts verified
- 2026-10-15