Increase gunicorn workers

hosts/weinturm-pretix-prod/services/pretix.nix

@@ -30,6 +30,7 @@ in
         "mail@jalr.de"
       ];
     };
+    gunicornWorkers = 32;
   };
 
   services.nginx = {

pkgs/pretix/module.nix

@@ -106,6 +106,11 @@ in
       type = types.path;
       description = "Path to the sops secrets file which stores pretix.cfg settings.";
     };
+    gunicornWorkers = mkOption {
+      type = types.int;
+      description = "Number of gunicorn workers. Recommended is roughly two times the number of CPU cores available.";
+      default = 2;
+    };
     mail = {
       enable = mkEnableOption "Enables or disables emailing.";
       from = mkOption {
@@ -232,7 +237,7 @@ in
           set -euo pipefail
           export PRETIX_CONFIG_FILE="$CREDENTIALS_DIRECTORY/config"
           exec ${pythonPackages.gunicorn}/bin/gunicorn pretix.wsgi --name ${name} \
-          --workers 3 \
+          --workers ${toString cfg.gunicornWorkers} \
           --log-level=info \
           --bind=${bind.host}:${toString bind.port}
         '';