Pre-generating Your Minecraft World

What is Pre-generation?

When you create a new Minecraft server, it generates a new world alongside it. At first only a small portion of this world will be generated on first launch and as you play your server will use processing power to generate the new locations you explore. Pre-generation means using Plugins or Mods such as Chunky to generate a specified section of your world without having to explore during gameplay.

What if I don't pre-generate?

When you are generating chunks during play, you might encounter:

• Lag spikes due to processing power being spent on world generation
• Entities entering a slow motion-like state where they hang in air or teleport around
• Low TPS and High MSPT causing a list of issues hindering your gameplay experience.

Because of these and more, we recommend going through the short effort to pre-generate your world so you can have a smoother experience throughout.

Why can't I pre-generate on my server?

As stated in our Terms of Service, "use heavy applications in such a way that they cause nuisance to the network and other containers and services" is not permitted. Pre-generation causes a very high load for many hours that hinder the experience of other users in our platform by stressing our hardware. Even ignoring this, pre-generation is very slow on your server due to how we allocate resources. What might take a day generating on your server might take only a few hours on your local computer.

How do I start Pre-generating?

First of all, as with every task you should first start by turning off your server and taking a backup of your files. Afterwards install a pre-generation plugin or mod on your server. If you need a guide for that you can follow our Installing Plugins documentation. For this guide we will be using Chunky on Fabric 1.21.11. Next we will download our server files to run our server locally on our computer.

1. Go on the Files tab and click the checkbox at the top left to select all your files.
2. Click Archive button at the bottom of your screen to compress your files into a Tar.gz archive.
3. In a few seconds you will see a new file titled "archive-YEAR-MONTH-DATE.tar.gz", click the 3 dots beside it and click Download to start the download.

Wait for the download to complete and extract the contents of the archive to a folder of your choosing. Once that's done, click and open server.jar. You should see a screen like this;

First click the box at the bottom to type commands into the console. We will be first configuring chunky to specify what we want to pre-generate. Type these commands in order;

the_nether" or "the_end" respectively. %%

• chunky spawn %% This sets the center point for pre-generation to be the world spawn point %%
• chunky radius 5000 %% This sets the pre-generation distance to 5000 Blocks in every direction so totaling to a 25000 Block Area which should be a good starting point for most small scale SMPs %%
• chunky start %% This starts the pre-generation process %%"

The chunk generation will now start. You should be seeing progress notifications on the console. If you wish to see more commands you can use the command "chunky help" or check out the Chunky Wiki.

Once the pre-generation task is complete you can close the server window. Next archive the "world" folder in the same directory into a zip file and upload it to your server using SFTP. Afterwards delete your existing world folder on the server and unarchive the newly uploaded zip file to extract your pre-generated world. Finally you can start your server and play!