current/benchmark/timers/timers-timeout-nexttick.js
'use strict';
const common = require('../common.js');
// The following benchmark measures setting up n * 1e6 timeouts,
// as well as scheduling a next tick from each timeout. Those
// then get executed on the next uv tick.
const bench = common.createBenchmark(main, {
n: [5e4, 5e6],
});
function main({ n }) {
let count = 0;
// Function tracking on the hidden class in V8 can cause misleading
// results in this benchmark if only a single function is used —
// alternate between two functions for a fairer benchmark.
function cb() {
process.nextTick(counter);
}
function cb2() {
process.nextTick(counter);
}
function counter() {
count++;
if (count === n)
bench.end(n);
}
for (let i = 0; i < n; i++) {
setTimeout(i % 2 ? cb : cb2, 1);
}
bench.start();
}