What Smooth Boot Does
Smooth Boot is a utility mod that tweaks how Minecraft handles its internal threads. It changes the number of threads used by the game's executors and adjusts the priority of each thread. These settings are all configurable through the mod's config file. The goal is to improve CPU scheduling, which can make the game load more smoothly and potentially run faster.
Important Note for Newer Versions
You don't need this mod if you are playing Minecraft 1.19.4 or later. The official project description states that Smooth Boot is no longer needed for version 1.19.4 because Minecraft fixed the underlying scheduling problem itself. Here's the thing, if you're on an older version, the mod remains relevant.
Compatibility and Loaders
The mod works with both Fabric and Quilt mod loaders. It is compatible with a specific list of Minecraft versions: 1.16.1, 1.16.2, 1.16.3, 1.16.4, 1.16.5, 1.17, 1.17.1, 1.19, 1.19.1, 1.19.2, 1.19.3, 1.19.3-rc1, and 1.19.4. Note that there's no support listed for 1.18 or 1.18.2 in the verified data, despite common assumptions about version continuity. The mod is optional on both the client and server sides, meaning you can install it on just one side if you prefer.
Configuration and Control
Everything the mod does is controlled via configuration. You can set the exact number of threads for different executors and define the priority level for each thread. But this level of control allows you to fine-tune performance based on your specific hardware setup. The project is open source under the MIT License, and the code is available on GitHub for those who want to inspect the implementation.
Who Should Use This
This mod suits players who experience stuttering or slow loading times on older Minecraft versions (1.16 through 1.19.3) and want to optimize CPU usage without installing heavy performance suites. It's a lightweight, targeted fix for thread scheduling issues. If you're already on 1.19.4 or newer, you can skip this mod entirely, as the game now handles these scheduling tasks natively.
