jvm_args.txt

// Optimized JVM arguments for Minecraft 1.17+
// JS code: str.split('\n').filter(v => !v.startsWith('//')).map(v => v.split(' //')[0]).join(' ')
// Results:
// -XX:+UnlockExperimentalVMOptions -XX:+AlwaysPreTouch -XX:+DisableExplicitGC -XX:+ParallelRefProcEnabled -XX:+UseStringDeduplication -XX:-UseBiasedLocking -XX:-UseG1GC -XX:+UseShenandoahGC -XX:MaxGCPauseMillis=10
//
-XX:+UnlockExperimentalVMOptions // Unlocks experimental options
// -XX:+AggressiveHeap // Enables Java heap optimization (DEPRECATED)
// -XX:+AggressiveOpts // Enables the use of aggressive performance optimization features (DEPRECATED)
-XX:+AlwaysPreTouch // Enables touching of every page on the Java heap during JVM initialization
-XX:+DisableExplicitGC // Disables System.gc() calls which causes excess GC
-XX:+ParallelRefProcEnabled // Enables parallel reference processing
// -XX:+PerfDisableSharedMem -XX:-UsePerfData // Disable performance monitoring (NOT RECOMMENDED)
-XX:+UseStringDeduplication // Enables remove of duplicate String values
-XX:-UseBiasedLocking // Disable biased locking
-XX:-UseG1GC // Disable default GC Minecraft uses
-XX:+UseShenandoahGC // Use Shenanddoah Garbage Collector - regionalized low latency collector (OpenJDK 15+)
// -XX:+UseZGC // Use Z Garbage Collector (ZGC) - scalable low latency GC (JDK 11+)
-XX:MaxGCPauseMillis=10 // Target max GC time