adicionando a VPS

2026-04-19 15:17:37 -03:00
parent 5f85583bd0
commit 8329531ac7
37 changed files with 1630 additions and 0 deletions
@@ -0,0 +1,114 @@
+{
+  config,
+  lib,
+  inputs,
+  pkgs,
+  ...
+}:
+{
+
+  ## Variaveis de ambiente contendo o aumento de cache para placas da nvidia
+  environment.variables = {
+    __GL_SHADER_DISK_CACHE_SIZE = "12000000000";
+    VK_LAYER_PATH = "${pkgs.vulkan-validation-layers}/share/vulkan/explicit_layer.d";
+  };
+
+  ## Configuraçoes de boot para otimzar o kernel e alguns patchs para nvidia
+  boot = {
+    modprobeConfig.enable = true;
+    kernelModules = [ "tcp_bbr" ];
+    extraModprobeConfig = "options nvidia NVreg_UsePageAttributeTable=1 \
+    NVreg_InitializeSystemMemoryAllocations=0 \
+    NVreg_DynamicPowerManagement=0x02";
+    kernel.sysctl = {
+      "kernel.split_lock_mitigate" = 0;
+      "kernel.nmi_watchdog" = 0;
+      "net.core.netdev_max_backlog" = 4096;
+      "fs.file-max" = 2097152;
+      "net.ipv4.tcp_congestion_control" = "bbr";
+    };
+  };
+
+  services = {
+
+    earlyoom = {
+      enable = true;
+      freeSwapThreshold = 2;
+      freeMemThreshold = 2;
+      extraArgs = [
+        "-g"
+        "--avoid"
+        "'^(X|plasma.*|konsole|kwin|wayland|gnome.*)$'"
+      ];
+    };
+
+    ## Otimizaçao do Udev para placas de Video da Nvidia
+    udev = {
+      enable = true;
+      extraRules = ''
+             # Enable runtime PM for NVIDIA VGA/3D controller devices on driver bind
+             ACTION=="add|bind", SUBSYSTEM=="pci", DRIVERS=="nvidia", \
+             ATTR{vendor}=="0x10de", ATTR{class}=="0x03[0-9]*", \
+             TEST=="power/control", ATTR{power/control}="auto"
+
+             # Disable runtime PM for NVIDIA VGA/3D controller devices on driver unbind
+             ACTION=="remove|unbind", SUBSYSTEM=="pci", DRIVERS=="nvidia", \
+             ATTR{vendor}=="0x10de", ATTR{class}=="0x03[0-9]*", \
+             TEST=="power/control", ATTR{power/control}="on"
+
+             # enable udev xiaomi
+             SUBSYSTEM=="usb", ATTR{idVendor}=="2717", MODE="0666", GROUP="plugdev"
+        	     '';
+    };
+
+    preload-ng = {
+      enable = true;
+      settings = {
+        cycle = 15;
+        memTotal = -5;
+        memFree = 70;
+        memCached = 10;
+        memBuffers = 50;
+        minSize = 1000000;
+        processes = 60;
+        sortStrategy = 0;
+        autoSave = 1800;
+        mapPrefix = "/nix/store/;/run/current-system/;!/";
+        exePrefix = "/nix/store/;/run/current-system/;!/";
+      };
+    };
+  };
+
+  systemd.services.set-min-free-mem = {
+    description = "Set vm.min_free_kbytes dynamically";
+    wantedBy = [ "multi-user.target" ];
+    after = [ "local-fs.target" ];
+    serviceConfig = {
+      User = "root";
+      RemainAfterExit = true;
+    };
+    script = ''
+      TOTAL_MEM=$(${pkgs.gawk}/bin/awk '/MemTotal/ {printf "%.0f", $2 * 0.01}' /proc/meminfo)
+      if [ -z "$TOTAL_MEM" ] || [ "$TOTAL_MEM" -eq 0 ]; then
+        echo "Failed to calculate memory size" >&2
+        exit 1
+      fi
+      ${pkgs.sysctl}/bin/sysctl -w vm.min_free_kbytes=$TOTAL_MEM
+    '';
+  };
+
+  ## sistema de compressao compressao brtfs
+  fileSystems = {
+    "/" = {
+      options = [ "compress=zstd:3" ];
+    };
+  };
+
+  ## confiuraçao da zram
+  zramSwap = {
+    enable = true;
+    memoryPercent = 40;
+    algorithm = "zstd";
+  };
+
+}