1760c23f75This reverts commit 4671d551cf and
contains a fix to the issue raised for the revert.
PR-URL: https://github.com/nodejs/node/pull/31755
Reviewed-By: Anna Henningsen <anna@addaleax.net>
Reviewed-By: Vladimir de Turckheim <vlad2t@hotmail.com>
Reviewed-By: Rich Trott <rtrott@gmail.com>
61 lines
1.4 KiB
JavaScript
61 lines
1.4 KiB
JavaScript
// Call fs.readFile over and over again really fast.
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// Then see how many times it got called.
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// Yes, this is a silly benchmark. Most benchmarks are silly.
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'use strict';
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const path = require('path');
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const common = require('../common.js');
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const fs = require('fs');
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const assert = require('assert');
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const tmpdir = require('../../test/common/tmpdir');
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tmpdir.refresh();
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const filename = path.resolve(tmpdir.path,
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`.removeme-benchmark-garbage-${process.pid}`);
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const bench = common.createBenchmark(main, {
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duration: [5],
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len: [1024, 16 * 1024 * 1024],
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concurrent: [1, 10]
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});
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function main({ len, duration, concurrent }) {
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try { fs.unlinkSync(filename); } catch {}
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let data = Buffer.alloc(len, 'x');
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fs.writeFileSync(filename, data);
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data = null;
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let reads = 0;
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let benchEnded = false;
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bench.start();
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setTimeout(() => {
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benchEnded = true;
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bench.end(reads);
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try { fs.unlinkSync(filename); } catch {}
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process.exit(0);
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}, duration * 1000);
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function read() {
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fs.readFile(filename, afterRead);
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}
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function afterRead(er, data) {
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if (er) {
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if (er.code === 'ENOENT') {
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// Only OK if unlinked by the timer from main.
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assert.ok(benchEnded);
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return;
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}
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throw er;
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}
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if (data.length !== len)
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throw new Error('wrong number of bytes returned');
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reads++;
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if (!benchEnded)
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read();
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}
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while (concurrent--) read();
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}
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