node/benchmark/events/ee-emit.js
Anatoli Papirovski 71e592cc70 events: remove emit micro-optimizations
With improvements in V8, using separate emit functions is no longer
necessary and can instead be replaced by the spread operator.

improvement                             confidence        p.value
events/ee-emit.js n=2000000                 2.98 %        0.09852489
events/ee-emit-2-args.js n=2000000          4.19 %    *** 0.0001914216
events/ee-emit-6-args.js n=2000000         61.69 %    *** 6.611964e-35
events/ee-emit-diff-args.js n=2000000      -0.36 %        0.305069
events/ee-once.js n=20000000                6.42 %    *** 1.27831e-06

PR-URL: https://github.com/nodejs/node/pull/16869
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
Reviewed-By: Refael Ackermann <refack@gmail.com>
Reviewed-By: Evan Lucas <evanlucas@me.com>
Reviewed-By: Bryan English <bryan@bryanenglish.com>
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Timothy Gu <timothygu99@gmail.com>
Reviewed-By: Franziska Hinkelmann <franziska.hinkelmann@gmail.com>
Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com>
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Brian White <mscdex@mscdex.net>
2017-11-14 14:21:27 -06:00

52 lines
1.1 KiB
JavaScript

'use strict';
const common = require('../common.js');
const EventEmitter = require('events').EventEmitter;
const bench = common.createBenchmark(main, {
n: [2e6],
argc: [0, 2, 4, 10],
listeners: [1, 5, 10],
});
function main(conf) {
const n = conf.n | 0;
const argc = conf.argc | 0;
const listeners = Math.max(conf.listeners | 0, 1);
const ee = new EventEmitter();
for (var k = 0; k < listeners; k += 1)
ee.on('dummy', function() {});
var i;
switch (argc) {
case 2:
bench.start();
for (i = 0; i < n; i += 1) {
ee.emit('dummy', true, 5);
}
bench.end(n);
break;
case 4:
bench.start();
for (i = 0; i < n; i += 1) {
ee.emit('dummy', true, 5, 10, false);
}
bench.end(n);
break;
case 10:
bench.start();
for (i = 0; i < n; i += 1) {
ee.emit('dummy', true, 5, 10, false, 5, 'string', true, false, 11, 20);
}
bench.end(n);
break;
default:
bench.start();
for (i = 0; i < n; i += 1) {
ee.emit('dummy');
}
bench.end(n);
break;
}
}