32 lines
633 B
Nix
32 lines
633 B
Nix
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{ config, lib, ... }:
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let
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cfg = config.my.zram;
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in {
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options.my.zram = {
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enable = lib.mkEnableOption null // {
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default = !config.my.fs.swapPartition;
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};
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writebackDevice = lib.mkOption {
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default = null;
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type = with lib.types; nullOr path;
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};
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};
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config = lib.mkIf cfg.enable {
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zramSwap = {
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enable = true;
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algorithm = "zstd";
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memoryPercent = 90;
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inherit (cfg) writebackDevice;
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};
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boot.kernel.sysctl = {
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"vm.swappiness" = 180;
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"vm.watermark_boost_factor" = 0;
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"vm.watermark_scale_factor" = 125;
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"vm.page-cluster" = 1;
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};
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};
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}
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