How to test a code performance in Node.js?

Mon Jun 19 2017 09:06:37 GMT+0200 (Central European Summer Time), Peter Širka

How to test a code performance in Node.js?

  • install our Node.js module Performance Meter $ npm install performancemeter
  • and create custom tests

Running tests

  • save each test into separate file
  • run $ node testname.js

Caching objects

const Meter = require('performancemeter');

Meter.measure('Uncached', function() {
    fn({ success: true });
}, function() {
    function fn(obj){obj.success;}
});

Meter.measure('Cached', function() {
    fn(success);
}, function() {
    var success = { success: true };
    function fn(obj){obj.success;}
});

Caching objects

Caching object with assignment

const Meter = require('performancemeter');

Meter.measure('Uncached', function() {
    fn({ success: INDEX % 2 === 0 });
}, function() {
    function fn(obj){obj.success;}
});

Meter.measure('Cached with assignment', function() {
    success.success = INDEX % 2 === 0;
    fn(success);
}, function() {
    var success = { success: true };
    function fn(obj){obj.success;}
});

Caching object with assignment

Delete vs Undefined

const Meter = require('performancemeter');

Meter.measure('delete', function() {
    var obj = { success: true };
    delete obj.success;
    JSON.stringify(obj);
});

Meter.measure('undefined', function() {
    var obj = { success: true };
    obj.success = undefined;
    JSON.stringify(obj);
});

Meter.mode('low');

Delete vs Undefined

Caching DateTime

const Meter = require('performancemeter');

Meter.measure('Uncached', function() {
    fn(new Date());
}, function() {
    function fn(dt) {dt;}
});

Meter.measure('Cached', function() {
    fn(current);
}, function() {
    var current = new Date();
    function fn(dt) {dt;}
});

Meter.measure('Partially cached', function() {
    if (INDEX % 5 === 0)
        current = new Date();
    fn(current);
}, function() {
    var current = new Date();
    function fn(dt) {dt;}
});

Caching Datetime


Tags

Follow us

Latest blogs
Total.js Code Editor v1
Fri Dec 07 2018 22:55:13 GMT+0100 (Central European Standard Time)
New release: Total.js v3.1
Fri Dec 07 2018 11:41:40 GMT+0100 (Central European Standard Time)
New CDN for Flow + Dashboard + Flowboard
Sun Nov 04 2018 09:05:03 GMT+0100 (Central European Standard Time)
OpenPlatform v3
Mon Oct 15 2018 10:11:07 GMT+0200 (Central European Summer Time)
New Single Page Application template
Fri Oct 12 2018 21:25:34 GMT+0200 (Central European Summer Time)

Latest comments
Nice tip
Mauro Junior
Thu Sep 20 2018 21:41:02 GMT+0200 (Central European Summer Time)
Not only for Total.js. You can communicate with different websocket servers.
Peter Širka
Mon Apr 23 2018 20:08:20 GMT+0200 (Central European Summer Time)
Marko: you need to create a buffer with this codepage and write byte-to-byte string. I recommend ...
Peter Širka
Mon Apr 23 2018 20:06:21 GMT+0200 (Central European Summer Time)
Is WEBSOCKETCLIENT only for internal ws connections between totaljs apps?
Stelios Stephanua
Fri Mar 16 2018 06:04:22 GMT+0100 (Central European Standard Time)
Total.js is amazing! ;)
Leonardo Hessel
Tue Dec 19 2017 19:51:15 GMT+0100 (Central European Standard Time)

Pixabay


Read more

Total.js Code Editor v1

Products: Try our real-time collaboration tool for Total Developers. Code Editor offers great features for development.

Fri Dec 07 2018 22:55:13 GMT+0100 (Central European Standard Time)
New release: Total.js v3.1

News: I have released a new version of Total.js with bug fixes and with small improvements.

Fri Dec 07 2018 11:41:40 GMT+0100 (Central European Standard Time)
New CDN for Flow + Dashboard + Flowboard

News: I have changed CDN for Flow + Dashboard + Flowboard components to KeyCDN.

Sun Nov 04 2018 09:05:03 GMT+0100 (Central European Standard Time)
OpenPlatform v3

News: I have published a new version of OpenPlatform. New, better, faster, more secure and more simpler.

Mon Oct 15 2018 10:11:07 GMT+0200 (Central European Summer Time)
New Single Page Application template

News: I have published free, beautiful and simple Total.js + jComponent SPA template under MIT license.

Fri Oct 12 2018 21:25:34 GMT+0200 (Central European Summer Time)
Flow: How to find a specific component?

Tutorials: This tutorial shows you a quick way how to find a specific component in the Flow designer.

Mon Sep 03 2018 20:21:30 GMT+0200 (Central European Summer Time)1