84 lines
2 KiB
JavaScript
84 lines
2 KiB
JavaScript
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'use strict';
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// Benchmark comparing performance of event emit for many listeners
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// To run it, do following in memoizee package path:
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//
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// $ npm install eventemitter2 signals
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// $ node benchmark/many-on.js
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var forEach = require('es5-ext/object/for-each')
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, pad = require('es5-ext/string/#/pad')
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, now = Date.now
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, time, count = 1000000, i, data = {}
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, ee, native, ee2, signals, a = {}, b = {};
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ee = (function () {
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var ee = require('../')();
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ee.on('test', function () { return arguments; });
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ee.on('test', function () { return arguments; });
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return ee.on('test', function () { return arguments; });
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}());
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native = (function () {
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var ee = require('events');
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ee = new ee.EventEmitter();
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ee.on('test', function () { return arguments; });
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ee.on('test', function () { return arguments; });
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return ee.on('test', function () { return arguments; });
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}());
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ee2 = (function () {
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var ee = require('eventemitter2');
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ee = new ee.EventEmitter2();
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ee.on('test', function () { return arguments; });
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ee.on('test', function () { return arguments; });
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return ee.on('test', function () { return arguments; });
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}());
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signals = (function () {
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var Signal = require('signals')
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, ee = { test: new Signal() };
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ee.test.add(function () { return arguments; });
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ee.test.add(function () { return arguments; });
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ee.test.add(function () { return arguments; });
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return ee;
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}());
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console.log("Emit for 3 listeners", "x" + count + ":\n");
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i = count;
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time = now();
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while (i--) {
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ee.emit('test', a, b);
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}
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data["event-emitter (this implementation)"] = now() - time;
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i = count;
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time = now();
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while (i--) {
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native.emit('test', a, b);
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}
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data["EventEmitter (Node.js native)"] = now() - time;
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i = count;
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time = now();
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while (i--) {
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ee2.emit('test', a, b);
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}
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data.EventEmitter2 = now() - time;
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i = count;
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time = now();
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while (i--) {
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signals.test.dispatch(a, b);
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}
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data.Signals = now() - time;
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forEach(data, function (value, name, obj, index) {
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console.log(index + 1 + ":", pad.call(value, " ", 5), name);
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}, null, function (a, b) {
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return this[a] - this[b];
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});
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