fhinkel

Installing V8 on a Mac

Install depot_tools

$ git clone https://chromium.googlesource.com/chromium/tools/depot_tools.git
$ export PATH=`pwd`/depot_tools:"$PATH"

Build v8

$ fetch v8

fhinkel

var fs = require('fs')

for (var i = 0; i < 10000; i++) {
  printLength(__filename)
}

function printLength (filename) {
  fs.readFile(filename, foo)

  function foo (err, buf)  {

fhinkel

function valuesFn (array) {
  var i = 0
  return function foo (abort, cb) {
    if(i >= array.length)
      cb(true)
    else
      cb(null, array[i++])
  }
}

fhinkel

var fs = {
  readFile: function(filename, cb) {
    cb(null, {length: 12});
  }
}

for (var i = 0; i < 10000; i++) {
  var __filename = 'perf-test.js';
  printLength(__filename)
}

fhinkel

function isPrime(p) {
    const upper = Math.sqrt(p);
    for(let i = 2; i <= upper; i++) {
        if (p % i === 0 ) {
            return false;
        }
    }
    return true;
}

fhinkel

const js = require('./primes.js');
const addon = require('./build/Release/primes.node');

function run(i) {
    console.time('Prime in js');
    js.prime(i);
    console.timeEnd('Prime in js');

    console.time('Prime in addon');
    addon.prime(i);

fhinkel

#include <napi.h>
#include <math.h>

namespace primes {

// Implementation of isPrime() and prime() omitted. See
// https://github.com/fhinkel/javascript-vs-native-addon-prime-numbers/blob/master/primes.cc
    
Napi::Value Method(const Napi::CallbackInfo& info) {
    Napi::Env env = info.Env();

fhinkel

{
  "name": "profiler-issue",
  "version": "1.0.0",
  "description": "",
  "main": "index.js",
  "scripts": {
    "test": "echo \"Error: no test specified\" && exit 1"
  },
  "author": "",
  "license": "ISC",

fhinkel

'use strict';

const Compute = require('@google-cloud/compute');
const http = require('http');

const compute = new Compute();

const zone = compute.zone('us-central1-a');

// Create a new VM, using default ubuntu image. The startup script

fhinkel

// Run `npm install @google-cloud/compute` first.
const Compute = require('@google-cloud/compute');
const compute = new Compute();

// Creates a new VM using the latest Ubuntu image.
(async () => {
  try {
    const zone = await compute.zone('us-central1-a');
    const data = await zone.createVM(
      'ubuntu-instance',