server/minecraft: Optimized JVM execution

roles/server/minecraft/templates/launch.sh

@@ -3,6 +3,16 @@
   -server \
   -Xms{{ minecraft_start_ram | quote }} \
   -Xmx{{ minecraft_max_ram | quote }} \
+  -XX:+UseG1GC \
+  -XX:+UnlockExperimentalVMOptions \
+  -XX:MaxGCPauseMillis=100 \
+  -XX:+DisableExplicitGC \
+  -XX:TargetSurvivorRatio=90 \
+  -XX:G1NewSizePercent=50 \
+  -XX:G1MaxNewSizePercent=80 \
+  -XX:G1MixedGCLiveThresholdPercent=35 \
+  -XX:+AlwaysPreTouch \
+  -XX:+ParallelRefProcEnabled \
   -jar \
   {{ installation_directory | quote }}/server.jar \
   nogui