What Does Chunky Do?

Chunky is a plugin (for Paper/Spigot/Bukkit) or mod (for Forge/Fabric platforms) that pre-generates chunks in a Minecraft world to prevent lag spikes caused by real-time chunk loading when players explore.

Step-by-Step Guide

1. Install Chunky

   • Plugin users (Paper/Spigot/Purpur): Use your server’s plugin installer or manually upload the .jar into the plugins folder. Restart the server to enable it.
   • Modded users (Forge/Fabric/NeoForge): Upload the Chunky mod into the mods folder and restart.

2. Set Up Pre‑Generation

   • Select the world (if not default):

     /chunky world world   — for Overworld (default)
     /chunky world world_nether — for the Nether, etc.
     

   • Define the area:

     • Option 1: Set center coordinates:

       /chunky center <x> <z>
       
       

       (e.g., /chunky center 0 0)(mcserverhost.com)

     • Option 2: Align with world border (if you use a border):

       /chunky worldborder
       
       

     • Set radius (distance from center in blocks):

       /chunky radius <blocks>
       
       

       E.g., /chunky radius 5000 for a 10,000 × 10,000 area.

3. Start Generation

   /chunky start
   
   

   Watch for console messages indicating progress (chunks processed, percentage, ETA, speed).

4. Control the Process

   • Pause: /chunky pause
   • Resume: /chunky continue
   • Cancel: /chunky cancel
   • Check status anytime: /chunky progress

Important Considerations

• Run when no players are online: Pre-generation is resource-intensive and may cause lag during execution
• Start small: Begin with a modest radius (e.g., 5,000 blocks) and increase if necessary to avoid long durations or large disk use.
• Disk space consumption: Large areas require substantial storage—plan accordingly.
• Optional world boundary control: Installing ChunkyBorder lets you restrict players to the pre-generated area, enhancing stability.

Summary Table