nodejs/benchmark/dns/lookup.js

'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({ name, n, all }) {
  var i = 0;

  if (all === 'true') {
    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);
    })();
  }
}