nixos: make more "traits" mixins

1 files changed, 15 insertions, 0 deletions

diff --git a/modules/nixos/mixins/zram.nix b/modules/nixos/mixins/zram.nix
new file mode 100644
index 0000000..8d21dde
--- /dev/null
+++ b/modules/nixos/mixins/zram.nix
@@ -0,0 +1,15 @@
+{ config, lib, ... }:
+
+{
+  config = lib.mkIf config.zramSwap.enable {
+    # Optimize system for zram
+    # https://github.com/pop-os/default-settings/pull/163
+    # https://wiki.archlinux.org/title/Zram#Multiple_zram_devices
+    boot.kernel.sysctl = {
+      "vm.swappiness" = 180;
+      "vm.watermark_boost_factor" = 0;
+      "vm.watermark_scale_factor" = 125;
+      "vm.page-cluster" = 0;
+    };
+  };
+}