gistfile1.txt

var tls = require('tls');
var start = Date.now();

function connect() {
  tls.connect({host:'imap.gmail.com', port:993} , function() {
    console.log('connected', Date.now() - start);
  });
}

var max = 50
for (var i=0; i<max; i++) 
  connect()

var tls = require('tls');
var start = Date.now();

function connect(i) {
  tls.connect({host:'imap.gmail.com', port:993} , function() {
    max--;
    console.log('connected', max, i, Date.now() - start);
    if (max===0) {
      process.exit(0);
    }
  });
}

var max = 500;
for (var i=0; i<max; i++) {
  connect(i);
}