70 lines
2.5 KiB
Nix
70 lines
2.5 KiB
Nix
{ config, lib, ... }: let
|
|
|
|
cfg = config.systemd.oomd;
|
|
|
|
in {
|
|
imports = [
|
|
(lib.mkRemovedOptionModule [ "systemd" "oomd" "enableUserServices" ] "Use systemd.oomd.enableUserSlices instead.")
|
|
];
|
|
|
|
options.systemd.oomd = {
|
|
enable = lib.mkEnableOption (lib.mdDoc "the `systemd-oomd` OOM killer") // { default = true; };
|
|
|
|
# Fedora enables the first and third option by default. See the 10-oomd-* files here:
|
|
# https://src.fedoraproject.org/rpms/systemd/tree/806c95e1c70af18f81d499b24cd7acfa4c36ffd6
|
|
enableRootSlice = lib.mkEnableOption (lib.mdDoc "oomd on the root slice (`-.slice`)");
|
|
enableSystemSlice = lib.mkEnableOption (lib.mdDoc "oomd on the system slice (`system.slice`)");
|
|
enableUserSlices = lib.mkEnableOption (lib.mdDoc "oomd on all user slices (`user@.slice`) and all user owned slices");
|
|
|
|
extraConfig = lib.mkOption {
|
|
type = with lib.types; attrsOf (oneOf [ str int bool ]);
|
|
default = {};
|
|
example = lib.literalExpression ''{ DefaultMemoryPressureDurationSec = "20s"; }'';
|
|
description = lib.mdDoc ''
|
|
Extra config options for `systemd-oomd`. See {command}`man oomd.conf`
|
|
for available options.
|
|
'';
|
|
};
|
|
};
|
|
|
|
config = lib.mkIf cfg.enable {
|
|
systemd.additionalUpstreamSystemUnits = [
|
|
"systemd-oomd.service"
|
|
"systemd-oomd.socket"
|
|
];
|
|
systemd.services.systemd-oomd.wantedBy = [ "multi-user.target" ];
|
|
|
|
environment.etc."systemd/oomd.conf".text = lib.generators.toINI {} {
|
|
OOM = cfg.extraConfig;
|
|
};
|
|
|
|
systemd.oomd.extraConfig.DefaultMemoryPressureDurationSec = lib.mkDefault "20s"; # Fedora default
|
|
|
|
users.users.systemd-oom = {
|
|
description = "systemd-oomd service user";
|
|
group = "systemd-oom";
|
|
isSystemUser = true;
|
|
};
|
|
users.groups.systemd-oom = { };
|
|
|
|
systemd.slices."-".sliceConfig = lib.mkIf cfg.enableRootSlice {
|
|
ManagedOOMMemoryPressure = "kill";
|
|
ManagedOOMMemoryPressureLimit = "80%";
|
|
};
|
|
systemd.slices."system".sliceConfig = lib.mkIf cfg.enableSystemSlice {
|
|
ManagedOOMMemoryPressure = "kill";
|
|
ManagedOOMMemoryPressureLimit = "80%";
|
|
};
|
|
systemd.slices."user-".sliceConfig = lib.mkIf cfg.enableUserSlices {
|
|
ManagedOOMMemoryPressure = "kill";
|
|
ManagedOOMMemoryPressureLimit = "80%";
|
|
};
|
|
systemd.user.units."slice" = lib.mkIf cfg.enableUserSlices {
|
|
text = ''
|
|
ManagedOOMMemoryPressure=kill
|
|
ManagedOOMMemoryPressureLimit=80%
|
|
'';
|
|
overrideStrategy = "asDropin";
|
|
};
|
|
};
|
|
}
|