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Observable project artwork

CurseForge · Minecraft mod

Observable

See what's lagging your server.

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

Quick answer

Which Observable release should I use?

Updated 1 year ago
Latest stable file 4.4.1 (forge)
Game version 1.20.1
Loader Forge

Observable 4.4.1 (forge) targets 1.20.1 with Forge. The project page does not say whether this file belongs on the client, dedicated server, or both. 1 required mod needs a matching file.

Where it goes

Is Observable 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 Forge
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.

Understand client and server requirements Read the Minecraft installation guide

What else does Observable 4.4.1 (forge) need?

4.4.1 (forge). Change the file and its required mods may change too.

1 required mod needs a matching file

Install Kotlin for Forge, Architectury API first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match.

Kotlin for Forge Needed by Observable 4.4.1 (forge)
required
Matching file found Matched file: Kotlin for Forge 4.12.0

We only count dependency files that match this setup. A file for another loader does not fill the gap.

Before you install it

Add Observable without breaking your instance.

Built for Observable 4.4.1 (forge). Pick another file and the loader, install side or required mods may change.

  1. 01

    Stick to this file

    Use 4.4.1 (forge). It targets 1.20.1 with Forge; another release may have different loader, side or dependency requirements.

  2. 02

    Bring the mods it needs

    Install Kotlin for Forge, Architectury API first, but 1 required mod has no matching file for this setup. Do not mix loader builds to force a match.

  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 4.4.1 (forge). It opens that exact file at the source.

About this project

What does Observable add?

Observable profiles (tile) entities and shows you what's taking up tick time and where. Forge and Fabric compatible. Please report any bugs on the GitHub repository here.

(Note: the default keybind to open profiler GUI is R.)

Current known issues:

  • Results screen is sometimes empty (closing and reopening the GUI fixes it)

FAQ:

  • Why is the mod crashing on startup with a "java.lang.NoClassDefFoundError: kotlin.jvm.<whatever>"?

The mod uses the Kotlin standard library, so please install a mod that provides that, such as Kotlin for Forge or Fabric Language Kotlin.

  • Does this mod need to be installed on the server?

In order to work, yes. Also, players can connect without the mod installed on the client, however they will not be able to use any of its features.

Screenshots here.

Project description from CurseForge.

Pick your setup

Observable by Minecraft version and loader

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

28 available setups

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

Recent files

Observable versions and loaders

46 of 46 releases match

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

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