benchmark: add bench for zlib gzip + gunzip cycle

Originally wrote this for some work that is going to take a while longer before it’s ready to be PR’ed, so it seems fine to start with this on its own. PR-URL: #20034 Reviewed-By: James M Snell <jasnell@gmail.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>

Author: addaleax

benchmark/zlib/pipe.js

@@ -0,0 +1,39 @@
+'use strict';
+const common = require('../common.js');
+const fs = require('fs');
+const zlib = require('zlib');
+
+const bench = common.createBenchmark(main, {
+ inputLen: [1024],
+ duration: [5],
+ type: ['string', 'buffer']
+});
+
+function main({ inputLen, duration, type }) {
+ const buffer = Buffer.alloc(inputLen, fs.readFileSync(__filename));
+ const chunk = type === 'buffer' ? buffer : buffer.toString('utf8');
+
+ const input = zlib.createGzip();
+ const output = zlib.createGunzip();
+
+ let readFromOutput = 0;
+ input.pipe(output);
+ if (type === 'string')
+ output.setEncoding('utf8');
+ output.on('data', (chunk) => readFromOutput += chunk.length);
+
+ function write() {
+ input.write(chunk, write);
+ }
+
+ bench.start();
+ write();
+
+ setTimeout(() => {
+ // Give result in GBit/s, like the net benchmarks do
+ bench.end(readFromOutput * 8 / (1024 ** 3));
+
+ // Cut off writing the easy way.
+ input.write = () => {};
+ }, duration * 1000);
+}

test/parallel/test-benchmark-zlib.js

@@ -9,5 +9,10 @@ runBenchmark('zlib',
  'method=deflate',
  'n=1',
  'options=true',
- 'type=Deflate'
- ]);
+ 'type=Deflate',
+ 'inputLen=1024',
+ 'duration=0.001'
+ ],
+ {
+ 'NODEJS_BENCHMARK_ZERO_ALLOWED': 1
+ });