LagRadar
Real-Time Lag Cause Detector
Find out exactly what’s causing lag on your server in real-time. LagRadar tracks entities, tile entities, redstone, hoppers, and more; giving you actionable insights instantly.
Features
/lag top; View top lag contributors.- Detect dense mob clusters (mob farms, stacked mobs).
- Show heavily ticking chunks.
- Track hoppers and redstone activity.
- Automatic MSPT spike warnings.
- Lightweight and optimized for live servers.
Configuration
- MSPT warning threshold
- Entity cluster size
- Hopper and redstone tracking toggles
- Chunk scan interval
Quick facts
- Edition: Minecraft Java
- File type: .jar
- Minecraft versions listed: 1.21, 1.21.1, 1.21.2
- 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 LagRadar-1.0.0.jar — drop this file into the mods folder
- Download size: 53 KB
- Download link checked 20 Aug 2026 — working
These come from our own check of the pack file, not from the source page.