diff --git a/modules/nixos/services/base/default.nix b/modules/nixos/services/base/default.nix
index ae08994..05fd02c 100644
--- a/modules/nixos/services/base/default.nix
+++ b/modules/nixos/services/base/default.nix
@@ -43,6 +43,7 @@ in
         [
           age
           bash
+          btop
           cifs-utils
           clevis
           delta
diff --git a/modules/nixos/services/gui/default.nix b/modules/nixos/services/gui/default.nix
index e69a537..9032d16 100644
--- a/modules/nixos/services/gui/default.nix
+++ b/modules/nixos/services/gui/default.nix
@@ -17,6 +17,10 @@ in
   };
 
   config = mkIf cfg.enable {
+    nix.daemonIOSchedClass = "idle"; # best-effort
+    nix.daemonIOSchedPriority = 4; # 7
+    nix.daemonCPUSchedPolicy = "idle"; # batch
+
     services = {
       gnome.localsearch.enable = lib.mkForce false;