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    <p>There is a problem with your client js:</p> <pre><code>client.on('end', function() { console.log('end'); client.end() }) </code></pre> <p>This event will happen <em>after</em> the connection ends, which you do by calling <code>.end()</code>... so it doesn't make any sense to call <code>.end()</code> in the end event. Also, you are not closing the connection at all:</p> <pre><code>var client = net.connect({ host: host, port: port }, function(i) { return function() { //'connect' listener var num = i; console.log('client connected ' + num); this.end() //Close the connection } }(i)); </code></pre> <p>After fixing that I can run your code without exceptions, and it did not leak for me. </p> <p>Server code:</p> <pre><code>function getUsed() { return process.memoryUsage().heapUsed; } var startedWith; var net = require('net'); var server = net.createServer(function(client) { client.on('data', function() {}); client.on('end', function() { console.log("end"); }); }); server.listen(8124, function() { startedWith = getUsed(); }); setInterval(function() { gc(); }, 13); setInterval(function() { gc(); console.log(getUsed() - startedWith); }, 250) </code></pre> <p>Run with node 0.10 <code>$ node --expose-gc server.js</code></p> <p>Client code:</p> <pre><code>var net = require('net'); var host = 'localhost', port = 8124 for (var i = 0; i &lt; 1500; i++) { var client = net.connect({ host: host, port: port }, function(i) { return function() { //'connect' listener var num = i; console.log('client connected ' + num); this.end(); } }(i)); client.on('end', function() { console.log('end'); }) } </code></pre> <p>Run with node 0.10 <code>$ node client.js</code> after server is running.</p>
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    1. POnodejs memory leak in several cases
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    1. USEsailija
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    1. CObecause you use the gc() . and have you ever try just use the setInterval()? the memory that used more and more!
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    2. CO@vagabond of course I use `gc()`, otherwise I'd have to wait longer to see results.
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    3. COoh I am sorry @Esailija, I misunderstand the gc() command. yes, the v8 default gc is very inactive。
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