node:perf_hooks

Модуль использует общие с глобальными объектами Web Performance временную шкалу и конструкторы:

import { performance } from "node:perf_hooks";

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

Экспорты включают performance, now, функции mark/measure/query/clear, конструкторы Performance, nodeTiming, createHistogram, monitorEventLoopDelay, eventLoopUtilization и timerify.

performance === globalThis.performance, а конструкторы модуля — те же объекты, что и их глобальные аналоги. nodeTiming также входит в performance.getEntriesByType("node").

Примечания о совместимости

constants — пустой объект.
nodeTiming сообщает этапы запуска в миллисекундах относительно запуска процесса; v8Start, environment, loopExit и idleTime равны нулю.

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.