MMCMF-MemoryMaster

作者：mornfire

Server-side heap memory optimization mod.

模组 NeoForge 修复服务器工具

介绍

中文介绍正在准备中，下面暂时显示原文。

MemoryMaster — Server-Side Heap Memory Optimization Mod

For NeoForge 1.21.1, server-side only; no client installation required.

All 7 modules are enabled by default and can be disabled individually. Each module’s mixins are kept in separate files, so a problem in one module won’t affect the others.

Safety is a design prerequisite:

The mixin plugin only validates target classes through resource lookup and does not load any classes (avoiding disruption of other mods’ injection timing).
All injections use require = 0, and the mixin config uses required = false.
All optimization logic is wrapped in try-catch; on exception it falls back to vanilla behavior and logs it.
There is a self-check at the transform stage and another after server startup to confirm whether injection points actually took effect; behavior-type injection points that didn’t take effect are automatically downgraded.
The mixin config uses priority = 9999, applied after other mods.
After startup it scans other mods’ mixins and proactively yields and writes to config when write-type overlap is found.
/mmcmf panic disables all optimizations with one command.

Modules

structures — Structure template cache LRU cap (default 30; the only write-type optimization enabled by default)
diagnose — Read-only diagnostics: /mmcmf report, /mmcmf diagnose, JFR 96–128 byte allocation tracking
guava — Guava immutable collection duplication measurement (write rewriting disabled by default)
bytepool — byte[] bucketed pool (16/32/64/128 KB; pooling application disabled by default)
objpool — Collection capacity pre-allocation based on historical peaks (disabled by default; cross-session learning)
smallobj — Creation-count statistics for BlockPos / ItemStack / advancement objects
secondopt — Conflict detection with FerriteCore/ModernFix/C2ME/Clumps, read-only leak observation, yielding

Commands

/mmcmf status — Module status and injection point self-check
/mmcmf report — JVM memory + memory-saving statistics (resident and allocation amounts calculated separately)
/mmcmf diagnose [smallobj|leaks|mods]
/mmcmf optimize|disable <module>|all
/mmcmf panic | unpanic | reload

It should be noted: the only write-type optimization enabled by default is the structure template cache cap; the rest are measurement and optional experiments.
The real memory hogs are still view distance / simulation distance, ModernFix’s dynamic_resources, and FerriteCore — this mod does not replace them.