add memory usage to info page

public/language/en-GB/admin/development/info.json

@@ -6,6 +6,7 @@
 	"nodejs": "nodejs",
 	"online": "online",
 	"git": "git",
+	"memory": "memory",
 	"load": "load",
 	"uptime": "uptime",
 

src/controllers/admin/info.js

@@ -9,7 +9,7 @@ var exec = require('child_process').exec;
 var pubsub = require('../../pubsub');
 var rooms = require('../../socket.io/admin/rooms');
 
-var infoController = {};
+var infoController = module.exports;
 
 var info = {};
 
@@ -76,6 +76,10 @@ function getNodeInfo(callback) {
 		},
 	};
 
+	data.process.memoryUsage.humanReadable = (data.process.memoryUsage.rss / (1024 * 1024)).toFixed(2);
+
+	async.waterfall([
+		function (next) {
 			async.parallel({
 				stats: function (next) {
 					rooms.getLocalStats(next);
@@ -83,14 +87,14 @@ function getNodeInfo(callback) {
 				gitInfo: function (next) {
 					getGitInfo(next);
 				},
-	}, function (err, results) {
-		if (err) {
-			return callback(err);
-		}
+			}, next);
+		},
+		function (results, next) {
 			data.git = results.gitInfo;
 			data.stats = results.stats;
-		callback(null, data);
-	});
+			next(null, data);
+		},
+	], callback);
 }
 
 function getGitInfo(callback) {
@@ -111,5 +115,3 @@ function getGitInfo(callback) {
 		},
 	}, callback);
 }
-
-module.exports = infoController;

src/views/admin/development/info.tpl

@@ -15,6 +15,7 @@
 						<td>[[admin/development/info:nodejs]]</td>
 						<td>[[admin/development/info:online]]</td>
 						<td>[[admin/development/info:git]]</td>
+						<td>[[admin/development/info:memory]]</td>
 						<td>[[admin/development/info:load]]</td>
 						<td>[[admin/development/info:uptime]]</td>
 					</tr>
@@ -31,6 +32,7 @@
 						<span title="[[admin/development/info:sockets]]">{info.stats.socketCount}</span>
 					</td>
 					<td>{info.git.branch}@<a href="https://github.com/NodeBB/NodeBB/commit/{info.git.hash}" target="_blank">{info.git.hash}</a></td>
+					<td>{info.process.memoryUsage.humanReadable} mb</td>
 					<td>{info.os.load}</td>
 					<td>{info.process.uptime}</td>
 				</tr>