From 3ba9ee6249ed721147a1b456eb4a0bd00099506d Mon Sep 17 00:00:00 2001
From: Nikolaos Karaolidis <nick@karaolidis.com>
Date: Sun, 27 Jul 2025 02:49:08 +0100
Subject: [PATCH] Add gaming performance tuning

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>
---
 .../user/gui/gaming/performance/default.nix   | 26 +++++++++++++++++++
 hosts/himalia/users/nick/default.nix          |  1 +
 2 files changed, 27 insertions(+)
 create mode 100644 hosts/common/configs/user/gui/gaming/performance/default.nix

diff --git a/hosts/common/configs/user/gui/gaming/performance/default.nix b/hosts/common/configs/user/gui/gaming/performance/default.nix
new file mode 100644
index 0000000..003855b
--- /dev/null
+++ b/hosts/common/configs/user/gui/gaming/performance/default.nix
@@ -0,0 +1,26 @@
+{ user, home }:
+{
+  config,
+  lib,
+  pkgs,
+  ...
+}:
+# https://bonkmaykr.xyz/content/discovery_lin.htm
+{
+  boot.kernel.sysctl."vm.max_map_count" = 1048576;
+
+  security.pam.loginLimits = [
+    {
+      domain = user;
+      item = "nofile";
+      type = "soft";
+      value = 200000;
+    }
+    {
+      domain = user;
+      item = "nofile";
+      type = "hard";
+      value = 200000;
+    }
+  ];
+}
diff --git a/hosts/himalia/users/nick/default.nix b/hosts/himalia/users/nick/default.nix
index 0a4076a..48910df 100644
--- a/hosts/himalia/users/nick/default.nix
+++ b/hosts/himalia/users/nick/default.nix
@@ -64,6 +64,7 @@ in
     (import ../../../common/configs/user/gui/firefox { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/gamemode { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/gamescope { inherit user home; })
+    (import ../../../common/configs/user/gui/gaming/performance { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/steam { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/prismlauncher { inherit user home; })
     (import ../../../common/configs/user/gui/gaming/proton { inherit user home; })