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* Update the user timing implementation to conform to User Timing Level 3. * Reimplement user timing and timerify with pure JavaScript implementations * Simplify the C++ implementation for gc and http2 perf * Runtime deprecate additional perf entry properties in favor of the standard detail argument * Disable the `buffered` option on PerformanceObserver, all entries are queued and dispatched on setImmediate. Only entries with active observers are buffered. * This does remove the user timing and timerify trace events. Because the trace_events are still considered experimental, those can be removed without a deprecation cycle. They are removed to improve performance and reduce complexity. Old: `perf_hooks/usertiming.js n=100000: 92,378.01249733355` New: perf_hooks/usertiming.js n=100000: 270,393.5280638482` PR-URL: https://github.com/nodejs/node/pull/37136 Refs: https://github.com/nodejs/diagnostics/issues/464 Reviewed-By: Antoine du Hamel <duhamelantoine1995@gmail.com> Reviewed-By: Matteo Collina <matteo.collina@gmail.com> Reviewed-By: Michaël Zasso <targos@protonmail.com>
26 lines
706 B
JavaScript
26 lines
706 B
JavaScript
'use strict';
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const common = require('../common');
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const assert = require('assert');
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const { PerformanceObserver, performance } = require('perf_hooks');
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const DELAY = 1000;
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const expected = ['Start to Now', 'A to Now', 'A to B'];
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const obs = new PerformanceObserver(common.mustCall((items) => {
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items.getEntries().forEach(({ name, duration }) => {
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assert.ok(duration > DELAY);
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assert.strictEqual(expected.shift(), name);
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});
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}));
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obs.observe({ entryTypes: ['measure'] });
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performance.mark('A');
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setTimeout(common.mustCall(() => {
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performance.measure('Start to Now');
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performance.measure('A to Now', 'A');
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performance.mark('B');
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performance.measure('A to B', 'A', 'B');
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}), DELAY);
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