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f3eb224c83
* 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>
106 lines
2.6 KiB
JavaScript
106 lines
2.6 KiB
JavaScript
// Flags: --expose-gc --expose-internals
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'use strict';
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const common = require('../common');
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const assert = require('assert');
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const {
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monitorEventLoopDelay
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} = require('perf_hooks');
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const { sleep } = require('internal/util');
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{
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const histogram = monitorEventLoopDelay();
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assert(histogram);
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assert(histogram.enable());
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assert(!histogram.enable());
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histogram.reset();
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assert(histogram.disable());
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assert(!histogram.disable());
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}
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{
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[null, 'a', 1, false, Infinity].forEach((i) => {
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assert.throws(
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() => monitorEventLoopDelay(i),
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{
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name: 'TypeError',
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code: 'ERR_INVALID_ARG_TYPE'
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}
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);
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});
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[null, 'a', false, {}, []].forEach((i) => {
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assert.throws(
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() => monitorEventLoopDelay({ resolution: i }),
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{
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name: 'TypeError',
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code: 'ERR_INVALID_ARG_TYPE'
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}
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);
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});
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[-1, 0, Infinity].forEach((i) => {
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assert.throws(
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() => monitorEventLoopDelay({ resolution: i }),
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{
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name: 'RangeError',
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code: 'ERR_OUT_OF_RANGE'
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}
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);
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});
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}
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{
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const histogram = monitorEventLoopDelay({ resolution: 1 });
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histogram.enable();
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let m = 5;
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function spinAWhile() {
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sleep(1000);
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if (--m > 0) {
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setTimeout(spinAWhile, common.platformTimeout(500));
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} else {
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histogram.disable();
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// The values are non-deterministic, so we just check that a value is
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// present, as opposed to a specific value.
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assert(histogram.min > 0);
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assert(histogram.max > 0);
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assert(histogram.stddev > 0);
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assert(histogram.mean > 0);
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assert(histogram.percentiles.size > 0);
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for (let n = 1; n < 100; n = n + 0.1) {
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assert(histogram.percentile(n) >= 0);
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}
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histogram.reset();
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assert.strictEqual(histogram.min, 9223372036854776000);
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assert.strictEqual(histogram.max, 0);
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assert(Number.isNaN(histogram.stddev));
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assert(Number.isNaN(histogram.mean));
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assert.strictEqual(histogram.percentiles.size, 1);
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['a', false, {}, []].forEach((i) => {
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assert.throws(
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() => histogram.percentile(i),
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{
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name: 'TypeError',
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code: 'ERR_INVALID_ARG_TYPE'
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}
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);
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});
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[-1, 0, 101, NaN].forEach((i) => {
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assert.throws(
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() => histogram.percentile(i),
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{
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name: 'RangeError',
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code: 'ERR_INVALID_ARG_VALUE'
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}
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);
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});
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}
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}
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spinAWhile();
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}
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// Make sure that the histogram instances can be garbage-collected without
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// and not just implictly destroyed when the Environment is torn down.
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process.on('exit', global.gc);
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