From aac0926608b6e7cc8a84ec01d7b2e487cf84b5b1 Mon Sep 17 00:00:00 2001
From: Jan-Bulthuis <git@bulthuis.dev>
Date: Fri, 18 Apr 2025 11:57:35 +0200
Subject: [PATCH] Dedicated more memory to network hardware

---
 machines/vm-audio.nix | 22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/machines/vm-audio.nix b/machines/vm-audio.nix
index fb63552..eba4c3e 100644
--- a/machines/vm-audio.nix
+++ b/machines/vm-audio.nix
@@ -46,7 +46,6 @@
         pipewire.jack
       ]
     )}";
-    services.xserver.enable = true;
     qt = {
       enable = true;
       style = "adwaita";
@@ -89,6 +88,27 @@
       };
     };
 
+    # Dedicate more memory to network interfaces
+    boot.kernel.sysctl = {
+      "net.core.rmem_default" = 1048576;
+      "net.core.rmem_max" = 16777216;
+      "net.core.wmem_default" = 1048576;
+      "net.core.wmem_max" = 16777216;
+      "net.core.optmem_max" = 65536;
+      "net.ipv4.tcp_rmem" = [
+        4096
+        1048576
+        2097152
+      ];
+      "net.ipv4.tpc_wmem" = [
+        4096
+        65536
+        16777216
+      ];
+      "net.ipv4.udp_rmem_min" = 8192;
+      "net.ipv4.udp_wmem_min" = 8192;
+    };
+
     # Create null sink for spotifyd
     services.pipewire.extraConfig.pipewire."91-null-sinks" = {
       "context.objects" = [