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eventloopdelay.md

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Class: EventLoopDelayMetric

It exposes both computed and raw values about the event loop delay.

eventLoopDelay.computed

  • <number>

Event loop delay in milliseconds. On Node versions that support monitorEventLoopDelay, it computes this value using the mean of the Histogram instance. Otherwise, it uses a simple timer to calculate it.

eventLoopDelay.raw

On Node versions that support monitorEventLoopDelay this exposes the Histogram instance. Otherwise, it exposes the raw delay value in nanoseconds.

eventLoopDelay.compute(raw)

  • raw <number> The raw value obtained using the Histogram API.
  • Returns <number> The computed delay value.

This function works only on node versions that support monitorEventLoopDelay. It allows to get computed values of the event loop delay from statistics other than the mean of the Histogram instance.