socket.io随着时间的推移，内存使用量不断增加

我能做些什么来保持合理的水平？
在我启动服务器之前，我有大约140MB的内存。
16个小时后，我有大约4mb的免费公羊。
我在256MB内存rackspace云上运行。

var maxMsgs = 50; var express = require('express'), sio = require('socket.io'), redis = require('redis'), RedisStore = require('socket.io/lib/stores/redis'); var app = express.createServer(), pub = redis.createClient(), sub = redis.createClient(), client = redis.createClient(); app.configure(function () { app.use(express.bodyParser()); app.use(express.cookieParser()); app.use(express.static(__dirname + '/public')); app.use(app.router); }); app.get('/', function (req, res) { res.sendfile(__dirname + '/index.html'); }); app.listen(8002, function () { var addr = app.address(); console.log('app listening on http://' + addr.address + ':' + addr.port); }); var io = sio.listen(app, {log: false}), nicknames = {}, history = [], user_count = 0, topic = {topic: '', setBy: 'Server'}, ytvid = {vid: '', setBy: 'Server'}; io.enable('browser client minification'); io.enable('browser client etag'); io.enable('browser client gzip'); io.set('store', new RedisStore({redisPub : pub, redisSub : sub, redisClient : client})); //io.set('resource', 'socket'); io.sockets.on('connection', function(socket) { socket.on('join', function(cu) { if(cu.username && cu.username != 'Guest') { socket.nickname = cu.username; socket.emit('connected', nicknames, history, topic, ytvid); nicknames[cu.username] = cu; socket.broadcast.emit('nicknames', nicknames); user_count++; //socket.broadcast.emit('announcement', {msg: socket.nickname + ' connected'}); } }); socket.on('message', function(msg, cb) { if(msg.msg && msg.msg != '') { msg.time = Date.now() / 1000; history.push(msg); while(history.length > maxMsgs) history.shift(); cb(true, msg.time); socket.broadcast.emit('message', msg); } }); socket.on('stopic', function(t) { if(t.topic && t.setBy && t.topic != '') { topic = t; io.sockets.emit('topic', t); } else { topic = {topic: 'No topic set', setBy: 'Admin'}; io.sockets.emit('topic', topic); } }); socket.on('sytvid', function(v) { if(v.vid && v.setBy && v.vid != '') { ytvid = v; io.sockets.emit('ytvid', v); } else { ytvid = {vid: false, setBy: 'Admin'}; io.sockets.emit('ytvid', ytvid); } }); socket.on('get debug', function() { socket.emit('debug', {users: nicknames, history: history, user_count: user_count, topic: topic}); }); socket.on('send command', function(c) { if(c.type == 'empty') history = []; io.sockets.emit('command', c); }); socket.on('disconnect', function() { if(!socket.nickname) return; if(!nicknames[socket.nickname]) return; //nicknames[socket.nickname].status = 'offline'; delete nicknames[socket.nickname]; //socket.broadcast.emit('announcement', {msg: socket.nickname + ' disconnected'}); socket.broadcast.emit('nicknames', nicknames); user_count--; }); }); function inArray(needle,haystack){for(var key in haystack){if(needle===haystack[key]){return true;}}return false;} function zeroPad(digits,n){n=n.toString();while(n.length<digits){n='0'+n;}return n;} function time(time){if(time==null)time=new Date();else if((time instanceof Date)===false)time=new Date(time);return time;} 

Answer 1

看起来像在socket.on（'join'）点的问题。

我build议你开始使用

 var profiler = require('v8-profiler'); setInterval(function() { profiler.takeSnapshot('snappy'); },1000); 

如http://code.google.com/p/v8/wiki/V8Profiler中所述

所以你现在会在哪里开始泄漏。

还仔细检查每个variables，对象和范围的分配和释放。

如果你有问题，请告诉我。

Answer 2

有些人认为socket.io在使用websockets传输时会泄漏内存 。 尝试禁用它。 有些东西是：

 io.configure('production', function(){ io.enable('browser client etag'); io.set('log level', 1); io.set('transports', [ , 'htmlfile' , 'xhr-polling' , 'jsonp-polling' ]); }); 

另外heroku不得不说以下