71 lines
No EOL
2.2 KiB
Markdown
71 lines
No EOL
2.2 KiB
Markdown
# Server — Properties, JVM, Operations
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## Server properties (view-distance=8, simulation-distance=6)
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`server_pack/server.properties` — set these values:
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```properties
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view-distance=8
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simulation-distance=6
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max-players=8
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motd=SCICRAFT - The Dark Photon Protocol
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difficulty=hard
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spawn-protection=0
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network-compression-threshold=256
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enable-command-block=true
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online-mode=true
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```
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`server_pack/eula.txt` → `eula=true` (after review).
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## Recommended JVM Flags (server)
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```bash
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java -Xms4G -Xmx8G \
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-XX:+UseG1GC \
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-XX:+ParallelRefProcEnabled \
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-XX:MaxGCPauseMillis=200 \
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-XX:+UnlockExperimentalVMOptions \
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-XX:+DisableExplicitGC \
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-XX:+AlwaysPreTouch \
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-XX:G1NewSizePercent=30 \
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-XX:G1MaxNewSizePercent=40 \
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-XX:G1HeapRegionSize=8M \
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-XX:G1ReservePercent=20 \
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-XX:G1HeapWastePercent=5 \
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-XX:G1MixedGCCountTarget=4 \
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-XX:InitiatingHeapOccupancyPercent=15 \
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-XX:G1MixedGCLiveThresholdPercent=90 \
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-XX:G1RSetUpdatingPauseTimePercent=5 \
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-Dlog4j2.formatMsgNoLookups=true \
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-jar neoforge-21.1.248-server.jar nogui
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```
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Notes:
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- G1 tuning keeps large-tech-server TPS stable under chunk gen (Krypton
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Reno + BadOptimizations help server-side).
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- `-Xms4G` avoids early GC churn. Cap at 8G; this pack is RAM-hungry
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from AE2/Mekanism tick load but does not need 16G.
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## Server start order
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1. `packwiz install --dir server_pack` (first time / after changes)
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2. Accept EULA.
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3. Launch with the JVM flags above.
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## Common failures
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| Symptom | Fix |
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| "Mismatched mods" on client join | Run `packwiz refresh` both packs, redeploy. |
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| Sinytra connector errors | Update Sinytra Connector + Forgified Fabric API together. |
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| Iris black screen | Disable flywheel compat first, then test without shaders. |
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| Crash on world gen (Deeper and Darker) | Ensure CF 659011 + its lithostitched data load; update both. |
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| TPS lag from many AE2 cells | Check FTB chunk claims; lower `simulation-distance`. |
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| Immersive Portals won't load | Must be the Fabric jar added via `url add --force` (Modrinth blocks loader mismatch). |
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## Backups
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- World: copy `server_pack/world/` (or use FTB Chunks backups).
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- Configs: `server_pack/config/` mirrors client defaults; keep both in sync
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when changing KubeJS scripts or FTB settings. |