node:perf_hooks

Le module partage sa chronologie des performances et ses constructeurs avec les globales Performance du Web :

import { performance } from "node:perf_hooks";

performance.mark("start");
performance.measure("work", "start");
console.log(performance.getEntriesByName("work").length); // 1

Les exports comprennent performance, now, les utilitaires de marque, de mesure, de requête et d’effacement, les constructeurs Performance, nodeTiming, createHistogram, monitorEventLoopDelay, eventLoopUtilization et timerify.

performance === globalThis.performance, et les constructeurs du module ont la même identité que leurs équivalents globaux. nodeTiming figure aussi dans performance.getEntriesByType("node").

Notes de compatibilité

constants est un objet vide.
nodeTiming indique les jalons du démarrage en millisecondes par rapport au démarrage du processus ; v8Start, environment, loopExit et idleTime valent zéro.

Reference

Status: Partial · Not measured · since 1.1.0

Exports

Export	Kind	Status	Notes
`PerformanceEntry`	class	Full	`name`, `entryType`, `startTime`, `duration`, `detail`, `toJSON()`
`PerformanceMark`	class	Full
`PerformanceMeasure`	class	Full
`PerformanceNodeTiming`	class	Full	`nodeStart`, `v8Start`, `environment`, `bootstrapComplete`, `loopStart`, `loopExit`, `idleTime`
`PerformanceObserverEntryList`	class	Full	`getEntries()`, `getEntriesByName()`, `getEntriesByType()`
`PerformanceObserver`	class	Full	`observe()`, `disconnect()`, `takeRecords()`, `PerformanceObserver.supportedEntryTypes`
`now()`	function	Full	Returns the current high-resolution millisecond timestamp relative to timeOrigin
`mark()`	function	Full	Creates a performance mark with the given name
`measure()`	function	Full	Creates a performance measure between two marks or timestamps
`getEntries()`	function	Full	Returns a list of all performance entries
`getEntriesByName()`	function	Full	Returns performance entries filtered by name
`getEntriesByType()`	function	Full	Returns performance entries filtered by type (“mark” or “measure”)
`clearMarks()`	function	Full	Removes all marks, or only marks with the given name
`clearMeasures()`	function	Full	Removes all measures, or only measures with the given name
`timeOrigin`	property	Full	The high-resolution millisecond timestamp at which the process started
`nodeTiming`	property	Full	Timing information about the Node.js process lifecycle

Not implemented

Performance, PerformanceResourceTiming.