Lag Spike Profiler

Accurate per frame profiling

190 Downloads

forgeoptimizationutility

Rent Server with this Mod

About this Mod

Profile the client thread to get per frame data to indentify the cause of frame time lag spikes.

How it works:

Run /profile [seconds] to start the profiler for the specified duration.
The profiler result will be saved in the minecraft instance folder being named after the current time (yyyy-MM-dd_HH-mm-ss.lagspikeprofile).
Load the profiler result using the LagSpikeProfiler Viewer.

Available Versions

v1.12.2-1.1.3release

MC 1.12.2forge

June 11, 2026

v1.12.2-1.1.2release

MC 1.12.2forge

June 1, 2026

1.1.1release

MC 1.12.2forge

February 4, 2026

1.1.0release

MC 1.12.2forge

February 3, 2026

1.0.0release

MC 1.12.2forge

January 1, 2026

How to Install Lag Spike Profiler on Your Server

Order Server

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

Set forge Loader

In the panel under "Egg", select the forge loader and matching Minecraft version (1.12.2).

Install Mod

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

Compatibility

Mod Loaders

forge

Minecraft Versions

1.12.2

Server-side

✗ Unsupported

Recommended RAM

4 GB(min. 3 GB)

Frequently Asked Questions

Lag Spike Profiler server crashes on startup – what to do?

Most common cause: wrong forge 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 (1.12.2). You can switch loaders with one click in the panel.

Is Lag Spike Profiler compatible with forge?

Lag Spike Profiler officially supports forge for Minecraft 1.12.2. The Mado dashboard automatically detects incompatible loader combinations.

Server lagging with Lag Spike Profiler – how to optimize performance?

Recommended RAM: 4 GB (per 8 players). Use /spark profiler to check if Lag Spike Profiler 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.