satr14/nix-flake
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enable jstat
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Satria 2026-05-13 15:15:01 +07:00
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modules/system/homelab/mc.nix
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@ -80,7 +80,7 @@ in {
"-XX:+UseLargePages" # Large pages support (requires hugepages configured on the system)
"-XX:+AlwaysPreTouch" # Pre-allocates memory on startup, OS claims it immediately for JVM instead of negotiating it
"-XX:+DisableExplicitGC" # Disables mods from manually invoking the GC
"-XX:+PerfDisableSharedMem" # Disables constant /tmp writes for JVM metrics
# "-XX:+PerfDisableSharedMem" # Disables constant /tmp writes for JVM metrics
"-XX:ZAllocationSpikeTolerance=5" # Helps when server is active with many players (causes unnecessary GC load at idle)
"-XX:SoftMaxHeapSize=${toString (ram-allocation-mb - 2048)}M" # Leave 2GB headroom for off-heap memory (native code, mods, and ZGC overhead)
]; in lib.concatStringsSep " " flags;