UltraFastPregen - Platform Description

Short Summary

The fastest chunk pre-generation plugin for Paper - 2.26x faster than Chunky!

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Full Description

UltraFastPregen is the fastest chunk pre-generation plugin available for Paper servers, outperforming Chunky by 2.26x in real-world benchmarks.

Built from the ground up with a region-optimized architecture, it scans .mca files directly instead of relying on Bukkit API calls, processes chunks in aligned 32x32 batches, and dynamically adapts concurrency to your available RAM. The result: hundreds of chunks generated per second with zero TPS impact.

Features

• 2x faster than Chunky - Region-optimized architecture with direct .mca file scanning
• Two generation shapes - Square (default) or Circle
• Real-time statistics - Progress, speed, ETA, and TPS monitoring
• Full control - Pause, resume, and stop at any time
• Auto-adaptive - Automatically adjusts parallel chunk count based on available RAM (100-500)
• Multi-world support - Generate across any loaded world
• Production-ready - Thread-safe, no memory leaks, robust error handling
• Zero configuration - Works out of the box

Performance

Real-world benchmarks on Paper 1.21.11 (8GB RAM, SSD):

Radius	UltraFastPregen	Chunky	Speedup
1,000 blocks (12,281 chunks)	2m 10s @ 95.8 c/s	4m 54s @ 54.8 c/s	2.26x
5,000 blocks (306,777 chunks)	~24 min @ 213 c/s	~55 min @ 93 c/s	2.3x

Commands

/pregen start <radius> [world] [shape]  - Start generation
/pregen stop                            - Stop
/pregen pause                           - Pause
/pregen resume                          - Resume
/pregen status                          - View progress
/pregen help                            - Help

Examples:

/pregen start 1000
/pregen start 5000 circle
/pregen start 1000 world_nether square

Auto Configuration

The plugin automatically scales to your server's resources:

RAM	Parallel Chunks	Performance Level
8GB+	500	Ultra
4-8GB	300	Very High
2-4GB	200	High
<2GB	100	Standard

Requirements

• Server: Paper 1.21.11 or compatible (Purpur, etc.)
• RAM: 4GB minimum recommended
• Java: 21+

License

All Rights Reserved - Free for personal use only. Modifications, commercial use, and redistribution are not permitted. Contact the author for commercial licensing.

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Meta

Tags: World Generation, Chunk Pre-generation, Performance, Optimization, Admin Tools, Paper

Version: 1.0.0 | Tested: Paper 1.21.11 | Compatible: Paper 1.21+

Links:

• GitHub
• Issues