From 9a2c56884974b0eece3698d976ee10c681d16cea Mon Sep 17 00:00:00 2001
From: zowoq <59103226+zowoq@users.noreply.github.com>
Date: Mon, 2 Sep 2024 10:05:38 +1000
Subject: [PATCH] modules/nixos/common: optimise zram
---
modules/nixos/common/default.nix | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/modules/nixos/common/default.nix b/modules/nixos/common/default.nix
index 78cac3b..b4218a0 100644
--- a/modules/nixos/common/default.nix
+++ b/modules/nixos/common/default.nix
@@ -40,6 +40,15 @@
zramSwap.enable = true;
+ # https://github.com/NixOS/nixpkgs/pull/268121
+ # https://wiki.archlinux.org/title/Zram#Optimizing_swap_on_zram
+ boot.kernel.sysctl = {
+ "vm.page-cluster" = 0;
+ "vm.swappiness" = 180;
+ "vm.watermark_boost_factor" = 0;
+ "vm.watermark_scale_factor" = 125;
+ };
+
security.acme.defaults.email = "trash@nix-community.org";
security.acme.acceptTerms = true;