MemBoost is a client-side Fabric mod for Minecraft 26.1.1.

It adds in-game memory stats, a config screen, presets, and a few client-side cleanup actions that can run when memory usage gets high.

MemBoost is a monitoring and cleanup utility. It does not change server-side memory handling, and results depend on your settings, world, and mod setup.

Features

• Memory HUD with heap usage, chunk count, packet activity, and cleanup stats
• Config screen with Mod Menu integration
• Presets for Play, Observe, and Stress
• Cleanup during world change, disconnect, and resource reload
• Configurable cleanup when memory usage gets high
• Optional temporary changes to render distance, simulation distance, and particle level
• Client-side commands for stats, presets, HUD, debug logging, and config access
• Client-side only

Presets

• Play - Balanced defaults for normal gameplay
• Observe - HUD and debug enabled for monitoring behavior
• Stress - Aggressive settings for low-memory testing

Commands

• /memboost - Show a quick overview
• /memboost stats - Show current memory and cleanup stats
• /memboost config - Open the config screen
• /memboost preset <play|observe|stress> - Apply a preset
• /memboost hud <on|off> - Toggle the HUD
• /memboost debug <on|off> - Toggle debug logging
• /memboost profile <safe|balanced|aggressive> - Set the cleanup profile
• /memboost interval <ticks> - Set the sample interval
• /memboost threshold <percent> - Set the warning threshold
• /memboost resetpeak - Reset peak memory usage

Requirements

• Minecraft 26.1.1
• Fabric Loader
• Fabric API

Example Test

Test setup:

• Minecraft 26.1.1
• Java 25
• CPU: AMD Ryzen 7 9700X
• GPU: Nvidia RTX 3060 Ti
• RAM: 32 GB DDR5
• JVM args: -Xms256M -Xmx2048M
• Render distance: 16
• Simulation distance: 16
• Test case: Loaded a singleplayer world and flew 3000 blocks south

Results from that setup:

Sodium only

• Peak heap: 1702 MiB

Sodium + MemBoost

• Peak heap: 1579 MiB
• Cleanup count: 12
• MemBoost preset: Stress

These numbers are from one local test setup and are provided as example results, not as guaranteed results for every world, server, or modpack.

Notes

This mod is client-side only and does not need to be installed on servers.

For singleplayer testing with aggressive settings, avoid extremely small heap sizes unless you are intentionally stress testing memory behavior.