readFile in promises very slow

Version

v21.7.1

Platform

Darwin evgeniis.local 23.4.0 Darwin Kernel Version 23.4.0: Wed Feb 21 21:44:43 PST 2024; root:xnu-10063.101.15~2/RELEASE_ARM64_T6000 arm64

Subsystem

No response

What steps will reproduce the bug?

slow

const fs = require('fs/promises');

const start = Date.now();
let count = 0;
for (let i = 0; i < 10000; i++) {
	fs.readFile("./text.txt", { encoding: 'utf-8' })
		.then((data) => {
			if (data !== "Hello, world") throw 1;
			count++
			if (count === 10000) {
				console.log('time: ', Date.now() - start);
			}
		})
		.catch((err) => {
			throw 1
		})
}

fast

const fs = require('fs');
const util = require('util');
const readFile = util.promisify(fs.readFile);

const start = Date.now();
let count = 0;
for (let i = 0; i < 10000; i++) {
	readFile("./text.txt", { encoding: 'utf-8' })
		.then((data) => {
			if (data !== "Hello, world") throw 1;
			count++
			if (count === 10000) {
				console.log('time: ', Date.now() - start);
			}
		})
		.catch((err) => {
			throw 1
		})
}

How often does it reproduce? Is there a required condition?

No response

What is the expected behavior? Why is that the expected behavior?

No response

What do you see instead?

The promise version is 2 times slower. My tests showed 200ms vs 100ms

Additional information

No response

Start by running the two provided benchmarks on Node.js v21.7.1 and comparing fs/promises.readFile with util.promisify(fs.readFile). Investigate the performance difference using the fs/promises and fs entry points mentioned in the report; done requires a reproducible explanation and a confirmed expected behavior.