benchmark: add stream.pipe benchmarks

mafintosh · addaleax · commit be9777c5f6c1 · 2018-02-27T17:55:58.000+01:00
PR-URL: #18617 Reviewed-By: Anna Henningsen <anna@addaleax.net> Reviewed-By: Benjamin Gruenbaum <benjamingr@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de> Reviewed-By: Anatoli Papirovski <apapirovski@mac.com> Reviewed-By: Benedikt Meurer <benedikt.meurer@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Tiancheng "Timothy" Gu <timothygu99@gmail.com>
diff --git a/benchmark/streams/pipe-object-mode.js b/benchmark/streams/pipe-object-mode.js
@@ -0,0 +1,24 @@
+'use strict';
+
+const common = require('../common');
+const { Readable, Writable } = require('stream');
+
+const bench = common.createBenchmark(main, {
+  n: [5e6]
+});
+
+function main({ n }) {
+  const b = {};
+  const r = new Readable({ objectMode: true });
+  const w = new Writable({ objectMode: true });
+
+  var i = 0;
+
+  r._read = () => r.push(i++ === n ? null : b);
+  w._write = (data, enc, cb) => cb();
+
+  bench.start();
+
+  r.pipe(w);
+  w.on('finish', () => bench.end(n));
+}
diff --git a/benchmark/streams/pipe.js b/benchmark/streams/pipe.js
@@ -0,0 +1,24 @@
+'use strict';
+
+const common = require('../common');
+const { Readable, Writable } = require('stream');
+
+const bench = common.createBenchmark(main, {
+  n: [5e6]
+});
+
+function main({ n }) {
+  const b = new Buffer(1024);
+  const r = new Readable();
+  const w = new Writable();
+
+  var i = 0;
+
+  r._read = () => r.push(i++ === n ? null : b);
+  w._write = (data, enc, cb) => cb();
+
+  bench.start();
+
+  r.pipe(w);
+  w.on('finish', () => bench.end(n));
+}
