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PONodeJs performance problem
 

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    <p>I'm building a realtime stats application using NodeJs. For the prototype I'm using a Quad-Core AMD Opteron in a RackSpace server for the test with a nodejs server using the Cluster NodeJs ( <a href="http://learnboost.github.com/cluster/" rel="nofollow">http://learnboost.github.com/cluster/</a> ) and the MongoDb using the native nodejs driver.</p> <p>Basically I've inserted a JS code in my company project that delivers content for a bunch of client's websites. This code "pings" my server each 10seconds calling for a image and passing parameters that I get in the server-side and insert ( or update ) in a MongoDb collection. In a "slow" time of the day I get about 3000 connections ( I get these using the netstat -natp command on terminal) each time that makes my cluster use about 25% of each core ( I get these using the "top" command ). But in a "busy" hour I get about 7000+ connections each time what makes my cluster go crazy ( about 80%+ use of each core ), and it seems that as the time goes by, the node degrades. Is this normal? Or should Nodejs handle these hits in a more "easy" way? If I use Mongoose, the performance can increase?</p> <p>In case you are curious about the MongoDb it uses about 4% of one core, which is fine by me ( without putting a index the use was about 50%+ but, at least, the index solved this performance problem ).</p> <p>Thanks a lot for the patience, Cheers.</p> <p>Edit:</p> <p>The code that makes the insert looks like this: db.open(function(err, db) { });</p> <pre><code>return connect.router(function(app){ app.get("/pingserver/:clientid/:event/:cachecontrol", function(req, res, next){ event:'+req.params.event + ', cachecontrol:' + req.params.cachecontrol); var timestamp = new Date(); switch(req.params.event) { case 'load': var params = url.parse(req.url, true).query; db.collection('clientsessions', function(err, collection) { try { var client = { id: req.params.clientid, state: req.params.event + 'ed', loadTime: timestamp.getTime(), lastEvent: req.params.event, lastEventTime: timestamp.getTime(), lastEventDate: timestamp.toString(), events: [{ event: req.params.event, timestamp: timestamp.getTime(), date: timestamp.toString() }], media: { id: params.media.split('|')[0] || null, title: unescape(params.media.split('|')[1]) || null }, project: { id: params.project.split('|')[0] || null, name: unescape(params.project.split('|')[1]) || null }, origin: req.headers['referer'] || req.headers['referrer'] || '', userAgent: req.headers['user-agent'] || null, userIp: req.socket &amp;&amp; (req.socket.remoteAddress || (req.socket.socket &amp;&amp; req.socket.socket.remoteAddress)), returningUser: false }; }catch(e) {console.log(e);} collection.insert(client, function(err, doc) { }); }); break; case 'ping': db.collection('clientsessions', function(err, collection) { collection.update({id: req.params.clientid}, { $set : { lastEvent: req.params.event ,lastEventTime: timestamp.getTime(),lastEventDate: timestamp.toString()} }, {}, function(err, doc) {}); }); break; default: db.collection('clientsessions', function(err, collection) { collection.update({id: req.params.clientid}, { $set : {state: req.params.event+'ed' , lastEvent: req.params.event , lastEventTime: timestamp.getTime()} , $push : { events : { event: req.params.event, timestamp: timestamp.getTime(), date: timestamp.toString() } } }, {}, function(err, doc) {}); }); break; } if (!transparent) { console.log('!transparent'); transparent = fs.readFileSync(__dirname + '/../../public/images/transparent.gif', 'binary'); } res.setHeader('Content-Type', 'image/gif'); res.setHeader('Content-Length', transparent.length); res.end(transparent, 'binary'); }); }); </code></pre>
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