should test this on linux, on mac it's terrible.

leak-test.js

var async = require( "async" );
var amount = 100*100*100;
var _arr = Array(amount).join(0).split(0);
var dummyFunction = function( cb ){
  return setTimeout(cb, 2);
};

var runBind = function( fn ){
	async.parallel(
		_arr.map(function(){
			return dummyFunction.bind( this );
		}), fn
	);
};

var runCall = function( fn ){
	async.parallel(
		_arr.map(function(){
			return dummyFunction;
		}), fn
	);
};

var runAnonFunction = function( fn ){
	async.parallel(
		_arr.map(function(){
			return function( cb ){
				dummyFunction(cb);
			};
		}), fn
	);
};

var target = process.argv[2];
var toRun;
switch( target ){
	case "bind":
		toRun = runBind;
		break;
	case "call":
		toRun = runCall;
		break;
	case "anon":
		toRun = runAnonFunction;
		break;
	default:
		throw new Error( "Missing option" );
}

console.log( "start running:", process.memoryUsage().rss/(1024*1024) + " MB");
toRun(function(){
	console.log( "end", process.memoryUsage().rss/(1024*1024) + " MB");
	setTimeout(function(){
		console.log( "after 1 min", process.memoryUsage().rss/(1024*1024) + " MB");
		process.exit();
	},1000*60*4);
});

run.sh

node --trace-gc --max-old-space-size=8192 test.js call