From 477b5abfa82e628826528a700d89010aa797c1ed Mon Sep 17 00:00:00 2001
From: coolneng <akasroua@gmail.com>
Date: Thu, 27 Jul 2023 00:14:13 +0200
Subject: [PATCH] Improve Syncthing performance

---
 configuration.nix    | 8 ++++++--
 modules/datasync.nix | 8 +++++++-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/configuration.nix b/configuration.nix
index e2d103d..015d296 100644
--- a/configuration.nix
+++ b/configuration.nix
@@ -94,8 +94,12 @@ with pkgs;
   # Keep logs for a week
   services.journald.extraConfig = "MaxRetentionSec=1week";
 
-  # Increase inotify limits
-  boot.kernel.sysctl = { "fs.inotify.max_user_watches" = 204800; };
+  # Increase inotify limits and maximum buffer size
+  boot.kernel.sysctl = {
+    "fs.inotify.max_user_watches" = 204800;
+    "net.core.rmem_max" = 2500000;
+    "net.core.wmem_max" = 2500000;
+  };
 
   # MOTD message
   programs.fish.interactiveShellInit = "${./scripts/motd.sh}";
diff --git a/modules/datasync.nix b/modules/datasync.nix
index 3a0673b..6e16b88 100644
--- a/modules/datasync.nix
+++ b/modules/datasync.nix
@@ -7,13 +7,19 @@
     guiAddress = "0.0.0.0:8384";
     dataDir = "/vault/syncthing";
     key = config.age.secrets.syncthing.path;
-    extraOptions = { options.maxFolderConcurrency = 1; };
     devices = {
       panacea.id =
         "NF4SYEJ-RSGPDEF-CDEYC3A-JWZMKNC-KG4FVQP-CZ5HRFY-XM22BZD-N7B6VAH";
       caravanserai.id =
         "MIRF73R-S7AV47R-VLWZUK2-TFCVQPV-FRYCPND-Y4VR3W2-ZAIQXZD-JAEQCAD";
     };
+    extraOptions = {
+      options = {
+        maxFolderConcurrency = 4;
+        progressUpdateIntervalS = -1;
+        caseSensitiveFS = true;
+      };
+    };
     folders = {
       Documents = {
         id = "wusdj-bfjkr";