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