performanceNodeTiming.uvMetricsInfo

• 返回:<Object>

  \Returns: <Object>

  • loopCount <number> 事件循环迭代次数。

    \loopCount <number> Number of event loop iterations.

  • events <number> 事件处理程序已处理的事件数。

    \events <number> Number of events that have been processed by the event handler.

  • eventsWaiting <number> 调用事件提供程序时等待处理的事件数。

    \eventsWaiting <number> Number of events that were waiting to be processed when the event provider was called.

这是 uv_metrics_info 函数的封装器。它返回当前的事件循环指标集。

\This is a wrapper to the uv_metrics_info function. It returns the current set of event loop metrics.

建议在使用 setImmediate 安排执行的函数中使用此属性,以避免在完成当前循环迭代期间安排的所有操作之前收集指标。

\It is recommended to use this property inside a function whose execution was scheduled using setImmediate to avoid collecting metrics before finishing all operations scheduled during the current loop iteration.

const { performance } = require('node:perf_hooks');
setImmediate(() => {
 console.log(performance.nodeTiming.uvMetricsInfo);
});import { performance } from 'node:perf_hooks';
setImmediate(() => {
 console.log(performance.nodeTiming.uvMetricsInfo);
});拷贝