td-api.patch

diff --git a/lib/route.js b/lib/route.js
index 673bc7c..86835f1 100644
--- a/lib/route.js
+++ b/lib/route.js
@@ -183,7 +183,8 @@ function getResourceRoute(stores) {
 
 function postRoute(stores) {
     return function (req, res) {
-        var api_requests = {},
+        var timer = req.perf.start(req.id || 'td-api', 'xhr_lifetime'),
+            api_requests = {},
             requests = req.body.requests;
 
         Object.keys(requests).forEach(function (id) {
@@ -238,6 +239,7 @@ function postRoute(stores) {
         async.parallel(api_requests, function (err, results) {
             res.set(response_defaults);
             res.json(200, results);
+            timer.stop();
             if (req.query.perf) {
                 console.log(req.perf.output());
             }