Flags Generator

Generate optimized Java startup flags and scripts for Minecraft servers (Aikar's, MeowIce's, etc.).

Configuration

File Name

The name of the file that will be used to start your server.

Environment

The operating system the server runs on.

Software

The software your Minecraft server will run on.

Memory (RAM): 4 GB

The amount of memory (RAM) to allocate to your server.

Flags

The collection of start arguments that typically optimize the server's performance.

Config Options

No GUI

Whether to display the built-in server management GUI.

Use Variables

Whether to use environment variables within the script to define memory and file name.

Auto-restart

Whether to automatically restart after it is stopped (Not available for Pterodactyl/Command).

Modern Vectors

Enables SIMD operations to optimize map item rendering on Pufferfish and its forks.

Generated Script

Script

The resulting script that can be used to start your server. Place this file in the same location as server.jar, then execute it!

#!/usr/bin/env bash

MEMORY="4G"
FILE="server.jar"

while true; do
  java -Xms$MEMORY -Xmx$MEMORY -XX:+UseG1GC -XX:+ParallelRefProcEnabled -XX:MaxGCPauseMillis=200 -XX:+UnlockExperimentalVMOptions -XX:+DisableExplicitGC -XX:+AlwaysPreTouch -XX:G1HeapWastePercent=5 -XX:G1MixedGCCountTarget=4 -XX:InitiatingHeapOccupancyPercent=15 -XX:G1MixedGCLiveThresholdPercent=90 -XX:G1RSetUpdatingPauseTimePercent=5 -XX:SurvivorRatio=32 -XX:+PerfDisableSharedMem -XX:MaxTenuringThreshold=1 -Dusing.aikars.flags=https://mcflags.emc.gs -Daikars.new.flags=true -XX:G1NewSizePercent=30 -XX:G1MaxNewSizePercent=40 -XX:G1HeapRegionSize=8M -XX:G1ReservePercent=20 -jar $FILE --nogui
  echo Server crashed! Restarting in 5 seconds...
  sleep 5
done

Ready to start your project?

Tell me what you want to build, whether that is a server, a plugin or a site. I usually reply within 24 to 48 hours.

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