Added simple event emitter benchmark

benchmark/emit_benchmark.js

@@ -0,0 +1,49 @@
+var debug = require('util').debug,
+  inspect = require('util').inspect,
+  inherits = require('util').inherits,
+  net = require('net'),
+  EventEmitter = require("events").EventEmitter;
+
+var COUNT = 1000000;
+
+var Emitter = function() {
+}
+
+inherits(Emitter, EventEmitter);
+
+Emitter.prototype.start = function() {
+  for(var i = 0; i < COUNT; i++) {
+    this.emit("data", "============================================== data")
+  }
+} 
+
+Emitter.prototype.start2 = function(callback) {
+  for(var i = 0; i < COUNT; i++) {
+    callback(null, "============================================== data")
+  }
+}
+
+// Create test object
+var emitObj = new Emitter();
+emitObj.on("data", function(data) {
+})
+
+console.log(COUNT + "x (objectBSON = BSON.serialize(object))")
+start = new Date
+
+emitObj.start();
+
+end = new Date
+console.log("time = ", end - start, "ms -", COUNT * 1000 / (end - start), " ops/sec")
+
+
+console.log(COUNT + "x (objectBSON = BSON.serialize(object))")
+start = new Date
+
+emitObj.start2(function(err, data) {
+  // debug(data)
+});
+
+end = new Date
+console.log("time = ", end - start, "ms -", COUNT * 1000 / (end - start), " ops/sec")
+