From 730683518cbdb0ab521938125d22247fc80dd3c6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Felix=20Schr=C3=B6ter?= <dev@felschr.com>
Date: Tue, 11 Apr 2023 17:00:07 +0200
Subject: [PATCH] feat(system): add zram swap

---
 home-server.nix   | 5 -----
 system/common.nix | 2 +-
 system/zram.nix   | 8 ++++++++
 3 files changed, 9 insertions(+), 6 deletions(-)
 create mode 100644 system/zram.nix

diff --git a/home-server.nix b/home-server.nix
index a1880f6..3847689 100644
--- a/home-server.nix
+++ b/home-server.nix
@@ -39,11 +39,6 @@ in with builtins; {
 
   nixpkgs.config.allowUnfree = true;
 
-  # improve memory performance
-  zramSwap.enable = true;
-  zramSwap.algorithm = "zstd";
-  zramSwap.memoryPercent = 150;
-
   networking.domain = "home.felschr.com";
 
   networking.firewall.allowedTCPPorts = [ 80 443 ];
diff --git a/system/common.nix b/system/common.nix
index c78ab85..e018006 100644
--- a/system/common.nix
+++ b/system/common.nix
@@ -1,7 +1,7 @@
 { config, pkgs, ... }:
 
 {
-  imports = [ ./i18n.nix ./nix.nix ./networking.nix ./hardened.nix ];
+  imports = [ ./zram.nix ./i18n.nix ./nix.nix ./networking.nix ./hardened.nix ];
 
   environment.systemPackages = with pkgs; [ wget curl openssl neovim ];
 }
diff --git a/system/zram.nix b/system/zram.nix
new file mode 100644
index 0000000..277acd1
--- /dev/null
+++ b/system/zram.nix
@@ -0,0 +1,8 @@
+{ config, pkgs, ... }:
+
+{
+  zramSwap.enable = true;
+  zramSwap.memoryPercent = 100;
+  zramSwap.memoryMax = 16 * 1024 * 1024 * 1024;
+  boot.kernel.sysctl."vm.swappiness" = 100;
+}