Necesse: Server Performance & Lag Fixes
As your colony grows, so does the CPU strain. 50 settlers calculating pathfinding simultaneously can bring even a strong server to its knees. Here represents the best known methods to reclaim your TPS (Ticks Per Second).
1. Java Heap (RAM)
The #1 cause of stutter. Default Java limits are often too low. You must explicitly set `-Xmx` flags.
2. Unload Settlements
A crucial config setting. If `unloadSettlements=false`, the server simulates every island 24/7. Set it to `true`.
3. Pathfinding
Settlers getting stuck in doors or complex mazes consume massive CPU cycles trying to find a route. Build wide, open pathways.
Allocating More RAM
Necesse runs on Java. You need to pass start-up arguments to give it more room to breathe.
- **Standard:** 2GB (`-Xmx2G`). Good for small play.
- **Recommended:** 4GB (`-Xmx4G`) or 6GB (`-Xmx6G`). Essential for late-game colonies with multiple islands loaded.
Supercraft User? We automatically scale your Java Heap based on your plan's memory limit. No action needed.
Configuration Tweaks (server.cfg)
Edit your `server.cfg` or `world-settings.cfg` to relieve stress:
| Setting | Recommendation | Why? |
|---|---|---|
unloadSettlements |
TRUE | This is the most important setting. It freezes islands when no players are present. If False, your CPU simulates the entire world forever. |
maxSettlersPerSettlement |
30-50 | Cap this if you have performance issues. 100+ settlers is extremely heavy on pathfinding. |
logging |
FALSE | Disabling verbose logging reduces Disk I/O, which can cause "stutters" during auto-saves. |
In-Game Optimizations
- **Simplify Bases:** Avoid 1-tile wide corridors. Settlers pathfind better in open spaces.
- **Limit Raiders:** Frequent raids force combat AI calculations. You can reduce `raidFrequency` in config.
- **Restart Daily:** Java's Garbage Collector can get inefficient over 48+ hours. A daily server restart clears the memory overhead.
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