benchmark: add new module loading benchmarks

benchmark/module/load-native.js

@@ -0,0 +1,19 @@
+'use strict';
+const common = require('../common.js');
+
+const bench = common.createBenchmark(main, {
+  path: ['vm', 'util'],
+  n: [1000],
+  useCache: ['true', 'false']
+});
+
+function main({ n, path, useCache }) {
+  if (useCache)
+    require(path);
+
+  bench.start();
+  for (var i = 0; i < n; i++) {
+    require(path);
+  }
+  bench.end(n);
+}

benchmark/module/module-loader-deep.js

@@ -0,0 +1,51 @@
+'use strict';
+const fs = require('fs');
+const path = require('path');
+const common = require('../common.js');
+
+const tmpdir = require('../../test/common/tmpdir');
+const benchmarkDirectory = path.join(tmpdir.path, 'nodejs-benchmark-module');
+
+const bench = common.createBenchmark(main, {
+  ext: ['', '.js'],
+  files: [1e3],
+  cache: ['true', 'false']
+});
+
+function main({ ext, cache, files }) {
+  tmpdir.refresh();
+  fs.mkdirSync(benchmarkDirectory);
+  fs.writeFileSync(
+    `${benchmarkDirectory}/a.js`,
+    'module.exports = {};'
+  );
+  for (var i = 0; i <= files; i++) {
+    fs.mkdirSync(`${benchmarkDirectory}/${i}`);
+    fs.writeFileSync(
+      `${benchmarkDirectory}/${i}/package.json`,
+      '{"main": "index.js"}'
+    );
+    fs.writeFileSync(
+      `${benchmarkDirectory}/${i}/index.js`,
+      `require('../a${ext}');`
+    );
+  }
+
+  measureDir(cache === 'true', files);
+
+  tmpdir.refresh();
+}
+
+function measureDir(cache, files) {
+  var i;
+  if (cache) {
+    for (i = 0; i <= files; i++) {
+      require(`${benchmarkDirectory}/${i}`);
+    }
+  }
+  bench.start();
+  for (i = 0; i <= files; i++) {
+    require(`${benchmarkDirectory}/${i}`);
+  }
+  bench.end(files);
+}