feat(desktop): do some more settings for better performance.

hosts/skadi/configuration.nix

@@ -103,11 +103,29 @@
   programs.noisetorch.enable = true;
 
   # Enable sound with pipewire.
-  services.pulseaudio.enable = false;
   security.rtkit.enable = true;
   services.pipewire = {
     enable = true;
     pulse.enable = true;
+
+    extraConfig.pipewire."92-low-latency" = {
+      "context.properties" = {
+        "default.clock.rate" = 48000;
+        "default.clock.quantum" = 256;
+        "default.clock.min-quantum" = 256;
+        "default.clock.max-quantum" = 256;
+      };
+    };
+    wireplumber.extraConfig = {
+      "10-disable-camera" = {
+        "wireplumber.profiles" = {
+          main = {
+            "monitor.libcamera" = "disabled";
+          };
+        };
+      };
+    };
+
     alsa = {
       enable = true;
       support32Bit = true;
@@ -175,6 +193,7 @@
   crony.sddm.enable = true;
   crony.wireguard.enable = true;
   crony.secrets.enable = true;
+  crony.boot.enable = true;
 
   # List packages installed in system profile
   environment.systemPackages = with pkgs; [

modules/linux/nixos/boot.nix

@@ -0,0 +1,16 @@
+{
+  config,
+  lib,
+  ...
+}: {
+  options = {
+    crony.boot.enable = lib.mkEnableOption "Enable and setup kernel related parameters";
+  };
+
+  config = lib.mkIf config.crony.boot.enable {
+    boot.kernel.sysctl = {
+      "vm.swappiness" = 10;
+      "kernel.nmi_watchdog" = 0;
+    };
+  };
+}

modules/linux/nixos/default.nix

@@ -25,6 +25,7 @@
     ./ollama.nix
     ./secrets.nix
     ./oom.nix
+    ./boot.nix
   ];
 
   crony.bluetooth.enable = lib.mkDefault true;
@@ -52,4 +53,5 @@
   crony.ollama.enable = lib.mkDefault false;
   crony.secrets.enable = lib.mkDefault false;
   crony.oom.enable = lib.mkDefault true;
+  crony.boot.enable = lib.mkDefault false;
 }

modules/linux/nixos/watchdog.nix

@@ -8,7 +8,6 @@
   };
 
   config = lib.mkIf config.crony.watchdog.disable {
-    boot.kernelParams = ["nmi_watchdog=0"];
     boot.blacklistedKernelModules = ["sp5100_tco"];
   };
 }