server main: start gotham with one thread per cpu

server/src/main.rs

@@ -169,5 +169,5 @@ fn main() {
                 .build()
         );
     });
-    gotham::start("0.0.0.0:8400", router);
+    gotham::start_with_num_threads("0.0.0.0:8400", router, cpus);
 }