📦 Systrace — Diagnostic Toolkit for Minecraft Mods
Systrace is a powerful diagnostic tool for Minecraft mod environments. It supports:
- 🧩 Exporting Mixin states
- 🧵 Viewing thread information
- 🖥️ Reporting system runtime details
- 📈 Running JFR (Java Flight Recorder) profiling
🔧 Flexible Installation
Systrace can be installed on:
- ✅ Server only
- ✅ Client only
- ✅ Both sides
Supports Fabric, Forge, and NeoForge loaders.
Compatible with Minecraft 1.20.1 and 1.21.1.
Includes enhanced and readable output formatting.
🕹️ Usage Commands (in-game)
/ste
→ Export Mixin info, thread states, system environment, and more
/ste jfr start
→ Start JFR profiling
/ste jfr stop
→ Stop profiling and save the .jfr recording file
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft version listed: 1.21.1
- How to install: Install the matching mod loader (Forge, Fabric or NeoForge) for your Minecraft version. → Download the .jar. → Put it in the .minecraft/mods folder and launch that loader profile.
- Where to get it: Opens on Modrinth — not every file is mirrored on our own servers.
Install steps are the general flow for this file type — How to install Minecraft Java mods & modpacks walks through it step by step.
Verified by MCModsHub
- Ships as systrace-fabric-1.0.0_1.21.1.jar — drop this file into the mods folder
- Download size: 1.6 MB
- Download link checked 31 Aug 2026 — working
These come from our own check of the pack file, not from the source page.