Performance Mods

How to boost performance on your modded server!

Introduction

It's undeniable: modded server are simply much slower than servers based on Paper or its forks. Thus, here are some Fabric mods that can aid performance! Do note that even with these mods, performance still won't be comparable to a server running on Paper.

Forge Support?

Most of these mods also have a Forge equivalent, where a developer has ported it to Forge. However, as many of these ports aren't official versions of the mod, they won't be included in this list.

Mods in Alphabetical Order:

Alternate Current

Optimises redstone. The most noticeable impact of this mod should be with redstone dust, where it can be up to 20x faster. Changes to redstone made by this mod are unnoticeable by most players.

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Chunky

Chunk pre-generation mod. It helps in reducing server lag caused by chunk generation.

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FerriteCore

Mod that optimises memory usage. Particularly useful for reducing memory usage in heavily modded scenarios.

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Krypton

Mod that optimises network usage.

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LazyDFU

Makes your server start up quicker!

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Lithium

Mod for general-purpose optimisation which should improve several systems without changing any vanilla mechanics.

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Phosphor

Mod which optimises the lighting engine. The most noticable impact of this mod is improved chunk generation speed.

You can either choose to install Phosphor or Starlight. You can't run the two together, as they both attempt to optimise the lighting engine, but each in a different way.

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ServerCore

Mod that aims to optimise and improve server performance across several areas. Unlike Lithium though, some of the modifications this mod makes may slightly alter vanilla gameplay. However, you can toggle these patches if you don't like them.

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Starlight

Mod which optimises the lighting engine. The most noticable impact of this mod is improved chunk generation speed. Although Starlight is much faster than Phosphor, it is also likely to have more incompatibilities due to being more invasive - it completely rewrites the lighting engine.

You can either choose to install Phosphor or Starlight. You can't run the two together, as they both attempt to optimise the lighting engine, but each in a different way.

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Spark

Diagnoses exact reasons of lag on your server whilst also providing server 'health reports'.

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Very Many Players

VMP is a server-side optimisation mod designed for higher playercounts. It's best used with Lithium. This mod is technically still in alpha at time of writing, so use it at your own discretion.

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By @icewaffles

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