hosts/gms-01: enable JVM opts

hosts/gms-01/default.nix

@@ -6,6 +6,28 @@
   inputs,
   ...
 }:
+let
+  jvmOpts = concatStringsSep " " [
+    "-XX:+UseG1GC"
+    "-XX:+ParallelRefProcEnabled"
+    "-XX:MaxGCPauseMillis=200"
+    "-XX:+UnlockExperimentalVMOptions"
+    "-XX:+DisableExplicitGC"
+    "-XX:+AlwaysPreTouch"
+    "-XX:G1NewSizePercent=40"
+    "-XX:G1MaxNewSizePercent=50"
+    "-XX:G1HeapRegionSize=16M"
+    "-XX:G1ReservePercent=15"
+    "-XX:G1HeapWastePercent=5"
+    "-XX:G1MixedGCCountTarget=4"
+    "-XX:InitiatingHeapOccupancyPercent=20"
+    "-XX:G1MixedGCLiveThresholdPercent=90"
+    "-XX:G1RSetUpdatingPauseTimePercent=5"
+    "-XX:SurvivorRatio=32"
+    "-XX:+PerfDisableSharedMem"
+    "-XX:MaxTenuringThreshold=1"
+  ];
+in
 {
   network.routingType = "dynamic";
   network.hardwareAddress = "";
@@ -34,6 +56,7 @@
         enable = true;
         package = pkgs.fabricServers.fabric-1_21_5;
         openFirewall = true;
+        inherit jvmOpts;
 
         # TODO transfer opts from docker-compose
         # TODO transfer RCON password after sops-nix setup