c2me - Au Naturel edition

C2ME Changelog

Performance Improvements targetting Au Naturel's Survival Use Case: This could mean slightly lower total throughput under default conditions to obtain greater apparent responsiveness and prioritisation of close chunks in survival.

Chunk Loading Priority System

• Reordered I/O operations to prioritize reads over writes, preventing autosave from blocking chunk loading
• Batch processing of write backlog (up to 8 per cycle) during quiet periods
• Added reserved loading slots for close chunks to prevent the "hole" effect where distant chunks load before nearby ones
• New config options: closeChunkDistanceThreshold (default: 8) and reservedCloseChunkSlots (default: 25% of max slots)

DynamicPriorityQueue Optimization

• Replaced O(n) linear scan with O(1) BitSet lookup for finding non-empty priority buckets

Minor CPU Efficiency Optimizations

• Single-lookup optimization in C2MEStorageThread cache reads
• Direct array allocation in ChunkStatusUtils (avoids intermediate list)
• Single-lookup pattern in DynamicPriorityQueue using defaultReturnValue
• Stream-to-loop conversion in chunk serialization paths

Bug Fixes

• Fixed reserved slots scaling for low-core systems under the new chunk prioritisation scheme
• Reserved slots now cap at 50% of total to guarantee distant chunks always get slots (i.e. for the likes of distant horizon distant generation).