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Server lag tester project artwork

CurseForge · Minecraft mod

Server lag tester

"/lagtest start" lags the server "/lagtest stop" stops the lag it does not decrease fps based on my testing only increases ping

Choose a version Pick your version below, then grab the matching file.

Quick answer

Which Server lag tester release should I use?

Updated last month
Latest stable file Lagtest-1.0.0-Neoforge
Game version 1.21.1
Loader NeoForge

Server lag tester Lagtest-1.0.0-Neoforge targets 1.21.1 with NeoForge. The project page does not say whether this file belongs on the client, dedicated server, or both. No extra mods listed for this file.

Where it goes

Is Server lag tester required on the client, server, or both?

The project page does not say whether this file belongs on the client, dedicated server, or both.

Client Source doesn’t say
Dedicated server Source doesn’t say
Loader for this release NeoForge
Required install it here Optional supported, not mandatory Not supported do not install here Source doesn’t say do not assume

The source does not explicitly classify this release as client-only or server-only.

What else does Server lag tester Lagtest-1.0.0-Neoforge need?

Lagtest-1.0.0-Neoforge. Change the file and its required mods may change too.

No extra mods listed for this file

This file does not list any required mods. Do not add a library just because a different file uses it.

This file does not list any required or optional mods.

Before you install it

Add Server lag tester without breaking your instance.

Built for Server lag tester Lagtest-1.0.0-Neoforge. Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use Lagtest-1.0.0-Neoforge. It targets 1.21.1 with NeoForge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    This file does not list any required mods. Do not add a library just because a different file uses it.

  3. 03

    Put it on the correct side

    The project page does not say whether this file belongs on the client, dedicated server, or both.

  4. 04

    Pick the file you checked

    Use the “Get this file” button beside Lagtest-1.0.0-Neoforge. It opens that exact file at the source.

About this project

What does Server lag tester add?

/lagtest start 1-2000000
causes lag

/lagtest status
tells you if there is lag and how much

/lagtest stop
stops the lag

The mod can be used for testing server latency it is not recomended to use more than 2000 because it might make it unplayable. this mod does not decrease your fps it can cause your fps to go up but that's just an unintended effect of the chunks loading slower.

Mod compatibility is untested so it could possibly break other mods so be advised while using this mod with any other mods.

Project description from CurseForge.

Pick your setup

Server lag tester by Minecraft version and loader

Choose the version and loader you play, then open the matching release.

2 available setups

Check the dependencies, then try the file in a copied instance before changing a world you care about.

Recent files

Server lag tester versions and loaders

2 of 2 releases match

Looking for an older file? The official CurseForge project page is in Resources.