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benchmark: fix issues in dns benchmark
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The benchmark script for dns contained functions with args declared
but never used. This fix removes those arguments from the function
signatures.

No test existed for the dns benchmark so one was added to the
parallel suite.
To improve performance the tests are limited to 1 invocation to a
single endpoint.

PR-URL: #14936
Reviewed-By: Rich Trott <[email protected]>
Reviewed-By: Ruben Bridgewater <[email protected]>
Reviewed-By: Refael Ackermann <[email protected]>
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ian-perkins authored and MylesBorins committed Sep 12, 2017
1 parent 7f62378 commit 7feb994
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Showing 2 changed files with 31 additions and 4 deletions.
8 changes: 4 additions & 4 deletions benchmark/dns/lookup.js
Original file line number Diff line number Diff line change
Expand Up @@ -5,20 +5,20 @@ const lookup = require('dns').lookup;

const bench = common.createBenchmark(main, {
name: ['', '127.0.0.1', '::1'],
all: [true, false],
all: ['true', 'false'],
n: [5e6]
});

function main(conf) {
const name = conf.name;
const n = +conf.n;
const all = !!conf.all;
const all = conf.all === 'true' ? true : false;
var i = 0;

if (all) {
const opts = { all: true };
bench.start();
(function cb(err, results) {
(function cb() {
if (i++ === n) {
bench.end(n);
return;
Expand All @@ -27,7 +27,7 @@ function main(conf) {
})();
} else {
bench.start();
(function cb(err, result) {
(function cb() {
if (i++ === n) {
bench.end(n);
return;
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27 changes: 27 additions & 0 deletions test/parallel/test-benchmark-dns.js
Original file line number Diff line number Diff line change
@@ -0,0 +1,27 @@
'use strict';

require('../common');

// Minimal test for dns benchmarks. This makes sure the benchmarks aren't
// horribly broken but nothing more than that.

const assert = require('assert');
const fork = require('child_process').fork;
const path = require('path');

const runjs = path.join(__dirname, '..', '..', 'benchmark', 'run.js');

const env = Object.assign({}, process.env,
{ NODEJS_BENCHMARK_ZERO_ALLOWED: 1 });

const child = fork(runjs,
['--set', 'n=1',
'--set', 'all=false',
'--set', 'name=127.0.0.1',
'dns'],
{ env });

child.on('exit', (code, signal) => {
assert.strictEqual(code, 0);
assert.strictEqual(signal, null);
});

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