mirror of https://github.com/nodejs/node.git
85 lines
2.4 KiB
JavaScript
85 lines
2.4 KiB
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { performance } = require('perf_hooks');
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if (!common.isMainThread)
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common.skip('bootstrapping workers works differently');
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assert(performance);
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assert(performance.nodeTiming);
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assert.strictEqual(typeof performance.timeOrigin, 'number');
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// Use a fairly large epsilon value, since we can only guarantee that the node
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// process started up in 15 seconds.
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assert(Math.abs(performance.timeOrigin - Date.now()) < 15000);
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const inited = performance.now();
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assert(inited < 15000);
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assert.strictEqual(performance.nodeTiming.name, 'node');
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assert.strictEqual(performance.nodeTiming.entryType, 'node');
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const delay = 250;
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function checkNodeTiming(props) {
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console.log(props);
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for (const prop of Object.keys(props)) {
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if (props[prop].around !== undefined) {
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assert.strictEqual(typeof performance.nodeTiming[prop], 'number');
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const delta = performance.nodeTiming[prop] - props[prop].around;
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assert(
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Math.abs(delta) < (props[prop].delay || delay),
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`${prop}: ${Math.abs(delta)} >= ${props[prop].delay || delay}`
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);
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} else {
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assert.strictEqual(performance.nodeTiming[prop], props[prop],
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`mismatch for performance property ${prop}: ` +
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`${performance.nodeTiming[prop]} vs ${props[prop]}`);
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}
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}
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}
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checkNodeTiming({
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name: 'node',
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entryType: 'node',
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startTime: 0,
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duration: { around: performance.now() },
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nodeStart: { around: 0 },
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v8Start: { around: 0 },
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bootstrapComplete: { around: inited, delay: 2500 },
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environment: { around: 0 },
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loopStart: -1,
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loopExit: -1
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});
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setTimeout(() => {
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checkNodeTiming({
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name: 'node',
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entryType: 'node',
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startTime: 0,
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duration: { around: performance.now() },
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nodeStart: { around: 0 },
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v8Start: { around: 0 },
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bootstrapComplete: { around: inited, delay: 2500 },
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environment: { around: 0 },
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loopStart: { around: inited, delay: 2500 },
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loopExit: -1
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});
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}, 1000);
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process.on('exit', () => {
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checkNodeTiming({
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name: 'node',
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entryType: 'node',
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startTime: 0,
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duration: { around: performance.now() },
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nodeStart: { around: 0 },
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v8Start: { around: 0 },
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bootstrapComplete: { around: inited, delay: 2500 },
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environment: { around: 0 },
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loopStart: { around: inited, delay: 2500 },
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loopExit: { around: performance.now() }
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});
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});
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