init

modules/system/performance.nix

@@ -0,0 +1,61 @@
+{
+  config,
+  lib,
+  pkgs,
+  inputs,
+  ...
+}:
+
+{
+  options.myModules.performance = {
+    enable = lib.mkEnableOption "system performance optimizations";
+  };
+
+  config = lib.mkIf config.myModules.performance.enable {
+    services.scx = {
+      enable = true;
+      scheduler = "scx_rustland";
+      package = pkgs.scx.full;
+    };
+
+    services.ananicy = {
+      enable = true;
+      package = pkgs.ananicy-cpp;
+      rulesProvider = pkgs.ananicy-rules-cachyos;
+    };
+
+    zramSwap = {
+      enable = lib.mkForce true;
+      algorithm = lib.mkForce "zstd";
+      memoryPercent = lib.mkForce 100;
+      priority = 100;
+    };
+
+    boot.kernel.sysctl = {
+      "vm.swappiness" = lib.mkForce 180;
+      "vm.watermark_boost_factor" = lib.mkForce 0;
+      "vm.watermark_scale_factor" = lib.mkForce 125;
+      "vm.page-cluster" = lib.mkForce 0;
+      "vm.dirty_ratio" = lib.mkForce 10;
+      "vm.dirty_background_ratio" = lib.mkForce 5;
+
+      "net.core.somaxconn" = lib.mkForce 8192;
+      "net.core.netdev_max_backlog" = lib.mkForce 16384;
+      "net.ipv4.tcp_slow_start_after_idle" = lib.mkForce 0;
+      "net.ipv4.tcp_rmem" = lib.mkForce "4096 1048576 2097152";
+      "net.ipv4.tcp_wmem" = lib.mkForce "4096 65536 16777216";
+    };
+
+    # faster boot
+    systemd.services.NetworkManager-wait-online.enable = lib.mkForce false;
+    systemd.services.systemd-networkd-wait-online.enable = lib.mkForce false;
+
+    services.irqbalance.enable = true;
+
+    nix.settings = {
+      max-jobs = "auto";
+      cores = 0;
+      log-lines = 25;
+    };
+  };
+}