itzg/docker-minecraft-server

Add ZGC Option for MeowIce Flags

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#3954 opened on Feb 27, 2026

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enhancementhelp wanted

Description

Enhancement Type

Improve an existing feature

Describe the enhancement

MeowIce provides 2 versions of the flags - one using the standard G1GC and the other using ZGC.

ZGC is a latency focused garbage collector which may have some benefits for higher end CPUs in reducing stutters due to garbage collection.

Contributor guide

Tech stack
javashelldocker
Domain
backenddevops
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
fresh
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
basic Docker knowledgefamiliarity with Minecraft JVM flags
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65
Research direction
Check the MeowIce configuration files in the repository, likely under scripts or templates. Look for existing G1GC flag options and replicate for ZGC. Review the relevant PR or comments for any maintainer guidance.