https://github.com/relativitymc/vmp-fabric

A Fabric mod designed to improve server performance at high playercounts.
https://github.com/relativitymc/vmp-fabric

fabric-mod fabricmc game hacktoberfest java minecraft performance

Last synced: about 16 hours ago
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A Fabric mod designed to improve server performance at high playercounts.

• Host: GitHub
• URL: https://github.com/relativitymc/vmp-fabric
• Owner: RelativityMC
• License: mit
• Created: 2021-10-31T07:27:13.000Z (almost 3 years ago)
• Default Branch: ver/1.21.1
• Last Pushed: 2024-09-12T13:42:25.000Z (13 days ago)
• Last Synced: 2024-09-21T10:32:35.514Z (4 days ago)
• Topics: fabric-mod, fabricmc, game, hacktoberfest, java, minecraft, performance
• Language: Java
• Homepage:
• Size: 1.12 MB
• Stars: 137
• Watchers: 5
• Forks: 8
• Open Issues: 18
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

Awesome Lists containing this project

README

        
# Very Many Players

[![Github-CI](https://github.com/RelativityMC/VMP-fabric/workflows/build/badge.svg)](https://github.com/RelativityMC/VMP-fabric/actions/workflows/build.yml)

[![Build Status](https://ci.codemc.io/job/RelativityMC/job/VMP-fabric/job/ver%252F1.19.2/badge/icon)](https://ci.codemc.io/job/RelativityMC/job/VMP-fabric/job/ver%252F1.19.2/)

[![Discord](https://img.shields.io/discord/756715786747248641?logo=discord&logoColor=white)](https://discord.io/ishlandbukkit)

A Fabric mod designed to improve server performance at high playercounts. 

**VMP is still in early development and things may break. Please report any issues to our issue tracker.**

## So what is VMP? 

Very Many Players, or VMP for short, is a Fabric mod designed to improve general server performance at high playercount 

**without sacrificing vanilla functionality or behavior**.  

For the best performance it is recommended to use VMP along with [Lithium](https://modrinth.com/mod/lithium).

## How VMP achieves its performance improvements?

*This list may contain features currently unreleased and only found in development builds*

**Server-side game logic performance improvements:**  

- Uses area maps to optimize nearby packet sending and player lookups

- Uses cache to optimize entity trackers, fluid state lookups, ingredient matching and biome lookup

- Optimizes natural spawning with caches and other tricks

- Optimizes entity tracking with area maps

- Optimizes entity iteration for collisions

- Optimizes ticket propagator using MCUtil from the Paper project (patch licensed under MIT)

- Makes initial chunk loading async on player login

- Makes several commands run async **only when issued by a player**

**Client-side game logic performance improvements:**  

- Makes time source to use built-in Java time source instead of GLFW via JNI calls

**Networking performance & responsiveness improvements:**

- Uses our own chunk sending mechanism (optionally with packet-level rate-limiting)

- Adds packet-level per-player render distance

- Makes vanilla tcp connections more responsive using packet priority from raknetify  

  (works best when the server is connected **without reverse proxies such as Velocity and SSH port forwarding**)

- Mitigates several kinds of bot attacks with split event loops and optimizations

**Other improvements:**

- Uses AsyncAppender to improve logging performance and keep logging IO off the main thread

**... and more**

## Support

[Issue tracker](https://github.com/RelativityMC/VMP-fabric/issues)  

[Discord server](https://discord.gg/Kdy8NM5HW4)

## Building and setting up

_Requires Java 17 or later, both to build it and to use it._  

Use Git to clone this repository, **do NOT download zip**  

Run the following commands in the project directory:

```shell

./gradlew clean build

```

## License

License information can be found [here](/LICENSE).