allow some latency

lib/server.js

@@ -67,11 +67,13 @@ function requestHandler(req, res) {
   var local_path = req.url.path_list[0];
   logging.log(req.id, req.method, req.url.href);
 
+  toobusy.maxLag(200);
   if (toobusy()) {
     res.writeHead(503, {
       "Content-Type": "text/plain"
     });
     res.end("Server is over capaacity :/");
+    logging.log(req.id, 503, Date.now() - req.start + "ms", "(error)");
     return;
   }