Startup Flags Generator

A high-fidelity script generator for your Minecraft servers with optimal performance flags.

Generator Config

File Namee.g. server.jar

Environment

Memory (8 GiB)

Calculate Overhead System

No GUI

Disable the default Minecraft server interface window.

Performance Flags

Parameter Optimization

Optimizes Java Garbage Collection performance to reduce TPS drops. Aikar's flags are universally recommended for Paper/Spigot.

Generated Output

start.sh

#!/bin/bash

java -Xms7680M -Xmx7680M --add-modules=jdk.incubator.vector -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 server.jar nogui

Software Specific

Our flags adapt automatically if you use Velocity, BungeeCord or standard Game Servers.

Multi-OS Support

Generate scripts for Linux (.sh), Windows (.bat) or just the raw command for Pterodactyl panels.

Advanced GC

Includes support for Generational ZGC and Shenandoah for servers requiring extreme low latency.