Chunk Activity Tracker
Library mod that stores a heatmap of player activity in chunks
About this Mod
Chunk Activity Tracker is a simple library mod that tracks information about player activity for each chunk, mainly how much time they spend in them.
This mod does nothing on its own, but provides utilities to mod developers.
Features:
- Tracks how much time, in seconds, each player spends in each chunk.
- Tracks how many blocks each player places in each chunk.
- Optionally, stores initial unmodified heightmap data for each chunk for future reference.
- Optimized binary storage format, simple (stress tested with 100k chunks)
Available Versions
How to Install Chunk Activity Tracker on Your Server
Order Server
Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).
Set fabric Loader
In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).
Install Mod
Open the mod browser in the dashboard and search for "Chunk Activity Tracker". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.
Compatibility
Mod Loaders
Minecraft Versions
1.21.1, 1.20.1, 1.20
Server-side
✓ RequiredRecommended RAM
4 GB(min. 3 GB)Frequently Asked Questions
Chunk Activity Tracker server crashes on startup – what to do?
Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.
Is Chunk Activity Tracker compatible with fabric and forge and neoforge?
Chunk Activity Tracker officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.20.1, 1.20. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.
Server lagging with Chunk Activity Tracker – how to optimize performance?
Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Chunk Activity Tracker consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.
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Rent Modded Server
Install Chunk Activity Tracker with just one click on your server.