
Modrinth · Minecraft modpack
Multi-Threading
🦾 Experimental server optimization modpack
Quick answer
Which Multi-Threading release matches 1.21.6?
Multi-Threading 1.21.6-2.5 is a complete pack release for 1.21.6 with Fabric 0.16.14. Install it as its own launcher instance. If the creator publishes a separate server file, make sure it names this exact pack release. 12 mods in this pack file.
Pack setup
How should I set up Multi-Threading for players and a server?
Use Multi-Threading 1.21.6-2.5 as the pack version. Install the pack as its own launcher instance. The creator’s listing does not name a separate server file, so check the release notes before setting up a dedicated server. Do not upload the ordinary client folder blindly.
A pack is a matched client and server setup, not one mod with an install-side label. Keep its release, loader, manifest and overrides together.
These numbers come from the pack file you chose. “Not labelled” means we don’t know which side it belongs on—not that it is safe everywhere. The file count is not a RAM estimate.
What are the server requirements for Multi-Threading?
Multi-Threading 1.21.6-2.5 on 1.21.6. The pack contents and setup notes below stay tied to that release.
The selected pack release is Multi-Threading 1.21.6-2.5. That file is for Minecraft 1.21.6 with Fabric 0.16.14. It contains 12 mod projects. The creator’s listing does not name a separate server file. Check their notes before using one, and do not upload an ordinary client folder or rebuild the pack mod by mod. A file count cannot tell us the right RAM, CPU or storage; size the server for the players and world you actually run.
About this project
What kind of pack is Multi-Threading?

🦾 Multi-Threading
This is a highly experimental modpack based on Server Optimization, but it is extremely efficient thanks to multithreaded entity processing.
Once again, this is a highly experimental modpack; you should expect everything to break. Make backups.
✨ Features
- Multithreaded Entity Processing(Async mod)
- All the Benefits of Server Optimization
💽 Installation
- Convert the .mrpack to .zip using the Modrinth Pack to Zip Converter
🧩Java and Flags
- Use Java Eclipse Temurin 25 with the following flags:
-XX:+UseZGC -XX:+UseCompactObjectHeaders - For more details, read the article
🗺️ Chunk Pregeneration:
To prevent lag caused by players generating chunks, it’s recommended to pre-generate them. Use the Chunky mod for this task.
You can estimate the size of your future world on this website.
Steps:
- Select the world where you want to pre-generate chunks:
Example:
/chunky world minecraft:overworld - Set the radius:
Example:
/chunky radius 5000 - Start the chunk pregeneration process:
/chunky start
Project description from Modrinth.
Mods in Multi-Threading 1.21.6-2.5
Open any mod on Modpacks.ch to check its files and dependencies.
2c2d60d73ef7d0f2adf1304f8df31b0fa65ffe34 · Modrinth version eTNKfjl1 · Project link unavailable Server only502ec7ed794ec6948bb957fbcd57f629fe63288a · Modrinth version GC4brzC0 · Project link unavailable Server only0951ad76de856b2e8804f06efc4302f828dc3bff · Modrinth version tlZRTK1v · Project link unavailable Side not labelled0e72174f0ad00f44a4aa53d92269a0461e0352a9 · Modrinth version inWDi2cf · Project link unavailable Side not labelledb273a883a3864108453a5d5f0b9e4f0a870c9579 · Modrinth version F5TVHWcE · Project link unavailable Side not labelled53d76354587cd1965b842fdce7cff965b5c52fe5 · Modrinth version CtMpt7Jr · Project link unavailable Side not labelled78f513f63036bc8fa061b5ee1aa88d5779f5a52c · Modrinth version XWGBHYcB · Project link unavailable Side not labelled7969f173ca3b4d499fe58ddf142cee2a86b960d6 · Modrinth version PQLHDg2Q · Project link unavailable Side not labelleda32e3322f99f0e26ce3d2c299ed4016c66959417 · Modrinth version tYpkAekN · Project link unavailable Server only329cdcf566637760c679b56a3213e18aa41cad5c · Modrinth version 3KCl7Vx0 · Project link unavailable Side not labelled0e1c092afce22ac9fade02d12f4071751cf7cf7f · Modrinth version MjGahcCF · Project link unavailable Server only5e74b333b37745ee54cfbfbdbec5ef3d3eb7eb0d · Modrinth version aWatA9pi · Project link unavailable Side not labelledPick your setup
Multi-Threading by Minecraft version and loader
Choose the version and loader you play, then open the matching release.
1.21.8
1 loader build1.21.7
1 loader build1.21.6
1 loader build1.21.5
1 loader build1.21.4
1 loader build1.21.3
1 loader build1.21.1
1 loader buildMade local changes? Try them in a copied instance before touching a world you care about.
Recent files
Multi-Threading versions and loaders
Looking for an older file? The official Modrinth project page is in Resources.