'use strict'; const common = require('../common.js'); const lookup = require('dns').lookup; const bench = common.createBenchmark(main, { name: ['', '127.0.0.1', '::1'], all: ['true', 'false'], n: [5e6] }); function main(conf) { const name = conf.name; const n = +conf.n; const all = conf.all === 'true' ? true : false; var i = 0; if (all) { const opts = { all: true }; bench.start(); (function cb() { if (i++ === n) { bench.end(n); return; } lookup(name, opts, cb); })(); } else { bench.start(); (function cb() { if (i++ === n) { bench.end(n); return; } lookup(name, cb); })(); } }