Hello,

I'm having issues when trying to pre generate chunks, the server runs out of memory and crashes.

Here are some results from a test server I set up on my local machine to reproduce the issue with minimal mods installed.
Heap Summary: https://spark.lucko.me/wcufZ7Nqw6
Profile: https://spark.lucko.me/CVkFAxZaHW

Server is running Fabric 0.12.12 on Minecraft version 1.18.1.
Mods used are Chunky-1.2.170, fabric-api-0.45.0+1.18, spark-fabric#266.

I get the same result regardless of the amount of memory I allocate.

There aren't any known memory leaks in chunky itself, but there are potential memory leaks such as MC-245406 (if you are upgrading an old world) in vanilla, and often in mods (although seemingly not the case here).

If you want to follow up, please join the Discord server since this is more of a troubleshooting issue. I would also recommend making a heap dump of the server when it is crashes.