Systrace

A diagnostic tool that exports system, thread, mixin and JFR profiling data.

1.3K Downloads

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Rent Server with this Mod

About this Mod

📦 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

Available Versions

Systrace Fabric 1.0.0-1.21.1release

MC 1.21.1fabric

May 20, 2025

Systrace NeoForge 1.0.0-1.21.1release

MC 1.21.1neoforge

May 20, 2025

Systrace Forge 1.0.0-1.20.1release

MC 1.20.1forge, neoforge

May 20, 2025

Systrace Fabric 1.0.0-1.20.1release

MC 1.20.1fabric

May 20, 2025

How to Install Systrace on Your Server

Order Server

Order a Minecraft Java server with at least 3 GB RAM (4 GB recommended).

Set fabric Loader

In the panel under "Egg", select the fabric loader and matching Minecraft version (1.21.1).

Install Mod

Open the mod browser in the dashboard and search for "Systrace". Click "Install" – done! Alternatively, upload the .jar via SFTP to the /mods folder.

Compatibility

Mod Loaders

fabricforgeneoforge

Minecraft Versions

1.21.1, 1.20.1

Server-side

~ Optional

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Systrace server crashes on startup – what to do?

Most common cause: wrong fabric version or insufficient RAM. Check the server log (latest.log) for "OutOfMemoryError" or "Mixin" errors. With Mado Hosting: ensure at least 3 GB RAM is allocated and the loader matches the mod version (1.21.1). You can switch loaders with one click in the panel.

Is Systrace compatible with fabric and forge and neoforge?

Systrace officially supports fabric, forge, neoforge for Minecraft 1.21.1, 1.20.1. Note: Forge and Fabric mods are NOT cross-compatible – pick one loader and stick with it. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Systrace – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Systrace consumes the most tick time. Common fixes: reduce server view-distance to 8-10, install "performant" or "starlight" as supplementary mods on Forge. With Mado Hosting, your server runs on NVMe SSDs with dedicated CPU cores for minimal latency.