Package Exports

event-loop-delay
event-loop-delay/index.js

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Readme

event-loop-delay

A minimal overhead event loop delay sampler.

npm install event-loop-delay

Usage

const loopDelay = require('event-loop-delay')

const sampler = loopDelay()

setInterval(function () {
  console.log('Accumulated delay in ms is', sampler.delay)
  console.log('Accumulated times a delay was detected', sampler.times)
}, 1000)

setInterval(function () {
  for (let i = 0; i < 1e7; i++) {
    // simulate event loop blocking
  }
}, 3000)

Running the above should run the sampler measuring the event loop delay.

API

`sampler = loopDelay()`

Make a new sampler. Will sample the event loop every 10ms.

`sampler.delay`

Accumulated event loop delay in ms measured since sampler was created.

`sampler.times`

Accumulated times the event loop delay was detected.

`sampler.destroy()`

Destroys the sampler.

License

MIT