From d5fa73ee65eb8ad7a90cdec8afe430078f87b3c5 Mon Sep 17 00:00:00 2001
From: Antoine Viallon <antoine@lesviallon.fr>
Date: Sat, 4 Feb 2023 23:07:58 +0100
Subject: [PATCH] [Nix] Reduce daemon impact on running system

---
 nix.nix | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/nix.nix b/nix.nix
index aeca47e..5b67a30 100644
--- a/nix.nix
+++ b/nix.nix
@@ -25,9 +25,15 @@ in
     nix.optimise.dates = mkDefault [ "Tuesday,Thursday,Saturday 03:00:00" ];
     nix.settings.auto-optimise-store  = mkDefault true;
 
-    nix.daemonIOSchedPriority = 7;
-    nix.daemonCPUSchedPolicy = "batch";
-    nix.daemonIOSchedClass = "idle";
+    systemd.services.nix-daemon = {
+      serviceConfig = {
+        Nice = 19;
+        CPUSchedulingPolicy = mkForce "batch";
+        IOSchedulingClass = mkForce "idle";
+        IOAccounting = true;
+        IOWeight = 1024 / 10;
+      };
+    };
 
   
     nix.package = mkIf (strings.versionOlder pkgs.nix.version "2.7") pkgs.nix_2_7;