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[Laptop] add new tuning to slightly improve power-efficiency

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This commit is contained in:
Antoine Viallon 2025-03-04 11:20:52 +01:00
parent a466ab78f6
commit 9b302fdd69
Signed by: aviallon
GPG key ID: 186FC35EDEB25716
1 changed files with 12 additions and 0 deletions
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12
laptop.nix
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@ -33,9 +33,19 @@ in {
"workqueue.power_efficient" = "1"; "workqueue.power_efficient" = "1";
nohz = "on"; nohz = "on";
# To save power, batch RCU callbacks and flush after delay, memory pressure or callback list growing too big.
"rcutree.enable_rcu_lazy" = "1";
pcie_aspm = mkIf cfg.tweaks.pcieAspmForce "force"; pcie_aspm = mkIf cfg.tweaks.pcieAspmForce "force";
}; };
boot.kernel.sysctl = {
"vm.laptop_mode" = "5";
# Disable hard-lockup detector
"kernel.nmi_watchdog" = "0";
};
systemd.services.nixos-upgrade = { systemd.services.nixos-upgrade = {
unitConfig = { unitConfig = {
ConditionACPower = true; ConditionACPower = true;
@ -64,6 +74,8 @@ in {
serviceConfig.ExecStart = let serviceConfig.ExecStart = let
script = pkgs.writeShellScriptBin "powertop-auto-tune" '' script = pkgs.writeShellScriptBin "powertop-auto-tune" ''
${pkgs.powertop}/bin/powertop --auto-tune ${pkgs.powertop}/bin/powertop --auto-tune
# Disable power-saving for HID devices (i.e., keyboard and mouse, as it is makes them frustrating to use)
HIDDEVICES=$(ls /sys/bus/usb/drivers/usbhid | grep -oE '^[0-9]+-[0-9\.]+' | sort -u) HIDDEVICES=$(ls /sys/bus/usb/drivers/usbhid | grep -oE '^[0-9]+-[0-9\.]+' | sort -u)
for i in $HIDDEVICES; do for i in $HIDDEVICES; do
echo -n "Enabling " | cat - /sys/bus/usb/devices/$i/product echo -n "Enabling " | cat - /sys/bus/usb/devices/$i/product