use same metrics object

Author: jasonwilson

lib/dashboard-agent.js

@@ -16,29 +16,27 @@ var dashboardAgent = function () {
 
   var socket = new SocketIO("http://localhost:" + options.port);
 
-  var eventLoop = {
-    delay: 0,
-    high: 0
+  var metrics = {
+    eventLoop: {
+      delay: 0,
+      high: 0,
+    },
+    mem: {
+      systemTotal: os.totalmem()
+    },
+    cpu: {
+      utilization: 0
+    }
   };
 
   var _delayed = function (delay) {
-    eventLoop.high = Math.max(eventLoop.high, delay);
-    eventLoop.delay = delay;
+    metrics.eventLoop.high = Math.max(metrics.eventLoop.high, delay);
+    metrics.eventLoop.delay = delay;
   };
 
   blocked(_delayed, { threshold: options.blockedThreshold });
 
   var _getStats = function (cb) {
-    var metrics = {
-      eventLoop: eventLoop,
-      mem: {
-        systemTotal: os.totalmem()
-      },
-      cpu: {
-        utilization: 0
-      }
-    };
-
     _.merge(metrics.mem, process.memoryUsage());
 
     pusage.stat(process.pid, function (err, stat) {
@@ -54,7 +52,7 @@ var dashboardAgent = function () {
   };
 
   var resetEventMetrics = function () {
-    eventLoop.delay = 0;
+    metrics.eventLoop.delay = 0;
   };
 
   var _emitStats = function () {