titaniumtown/server-config
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cleanup

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This commit is contained in:
Simon Gardling
2026-03-03 19:21:31 -05:00
parent cdccab855d
commit d4b679d1a5
12 changed files with 256 additions and 265 deletions
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81
services/minecraft.nix
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@@ -21,6 +21,19 @@
])
];
boot.kernel.sysctl = {
# Disable autogroup for better scheduling of game server threads
"kernel.sched_autogroup_enabled" = 0;
# We want to determine the number of hugepages based on how many minecraft needs.
# This can be determined by dividing the heap size by the size of a large page.
# Doing this gives us how many large pages are needed.
# Then we add 300 to give some headroom.
"vm.nr_hugepages" =
(service_configs.minecraft.memory.heap_size_m / service_configs.minecraft.memory.large_page_size_m)
+ 300;
};
services.minecraft-servers = {
enable = true;
eula = true;
@@ -31,42 +44,38 @@
enable = true;
package = pkgs.fabricServers.fabric-1_21_11;
jvmOpts =
let
heap_size = "4000M";
in
lib.concatStringsSep " " [
# Memory
"-Xmx${heap_size}"
"-Xms${heap_size}"
# GC
"-XX:+UseZGC"
"-XX:+ZGenerational"
# Base JVM optimizations (brucethemoose/Minecraft-Performance-Flags-Benchmarks)
"-XX:+UnlockExperimentalVMOptions"
"-XX:+UnlockDiagnosticVMOptions"
"-XX:+AlwaysActAsServerClassMachine"
"-XX:+AlwaysPreTouch"
"-XX:+DisableExplicitGC"
"-XX:+UseNUMA"
"-XX:+PerfDisableSharedMem"
"-XX:+UseFastUnorderedTimeStamps"
"-XX:+UseCriticalJavaThreadPriority"
"-XX:ThreadPriorityPolicy=1"
"-XX:AllocatePrefetchStyle=3"
"-XX:-DontCompileHugeMethods"
"-XX:MaxNodeLimit=240000"
"-XX:NodeLimitFudgeFactor=8000"
"-XX:ReservedCodeCacheSize=400M"
"-XX:NonNMethodCodeHeapSize=12M"
"-XX:ProfiledCodeHeapSize=194M"
"-XX:NonProfiledCodeHeapSize=194M"
"-XX:NmethodSweepActivity=1"
"-XX:+UseVectorCmov"
# Large pages (requires vm.nr_hugepages sysctl)
"-XX:+UseLargePages"
"-XX:LargePageSizeInBytes=2m"
];
jvmOpts = lib.concatStringsSep " " [
# Memory
"-Xmx${builtins.toString service_configs.minecraft.memory.heap_size_m}M"
"-Xms${builtins.toString service_configs.minecraft.memory.heap_size_m}M"
# GC
"-XX:+UseZGC"
"-XX:+ZGenerational"
# Base JVM optimizations (brucethemoose/Minecraft-Performance-Flags-Benchmarks)
"-XX:+UnlockExperimentalVMOptions"
"-XX:+UnlockDiagnosticVMOptions"
"-XX:+AlwaysActAsServerClassMachine"
"-XX:+AlwaysPreTouch"
"-XX:+DisableExplicitGC"
"-XX:+UseNUMA"
"-XX:+PerfDisableSharedMem"
"-XX:+UseFastUnorderedTimeStamps"
"-XX:+UseCriticalJavaThreadPriority"
"-XX:ThreadPriorityPolicy=1"
"-XX:AllocatePrefetchStyle=3"
"-XX:-DontCompileHugeMethods"
"-XX:MaxNodeLimit=240000"
"-XX:NodeLimitFudgeFactor=8000"
"-XX:ReservedCodeCacheSize=400M"
"-XX:NonNMethodCodeHeapSize=12M"
"-XX:ProfiledCodeHeapSize=194M"
"-XX:NonProfiledCodeHeapSize=194M"
"-XX:NmethodSweepActivity=1"
"-XX:+UseVectorCmov"
# Large pages (requires vm.nr_hugepages sysctl)
"-XX:+UseLargePages"
"-XX:LargePageSizeInBytes=${builtins.toString service_configs.minecraft.memory.large_page_size_m}M"
];
serverProperties = {
server-port = service_configs.ports.minecraft;