perf_hooks.RecordableHistogram

interface RecordableHistogram

• readonly count: number

  The number of samples recorded by the histogram.

• readonly countBigInt: bigint

  The number of samples recorded by the histogram. v17.4.0, v16.14.0

• readonly exceeds: number

  The number of times the event loop delay exceeded the maximum 1 hour event loop delay threshold.

• readonly exceedsBigInt: bigint

  The number of times the event loop delay exceeded the maximum 1 hour event loop delay threshold.

• readonly max: number

  The maximum recorded event loop delay.

• readonly maxBigInt: number

  The maximum recorded event loop delay. v17.4.0, v16.14.0

• readonly mean: number

  The mean of the recorded event loop delays.

• readonly min: number

  The minimum recorded event loop delay.

• readonly minBigInt: bigint

  The minimum recorded event loop delay. v17.4.0, v16.14.0

• readonly percentiles: Map<number, number>

  Returns a Map object detailing the accumulated percentile distribution.

• readonly percentilesBigInt: Map<bigint, bigint>

  Returns a Map object detailing the accumulated percentile distribution.

• readonly stddev: number

  The standard deviation of the recorded event loop delays.

• add(

  other: RecordableHistogram

  ): void;

  Adds the values from other to this histogram.
• percentile(

  percentile: number

  ): number;

  Returns the value at the given percentile.

  @param percentile

  A percentile value in the range (0, 100].

• percentileBigInt(

  percentile: number

  ): bigint;

  Returns the value at the given percentile.

  @param percentile

  A percentile value in the range (0, 100].

• record(

  val: number | bigint

  ): void;

  @param val

  The amount to record in the histogram.

• recordDelta(): void;

  Calculates the amount of time (in nanoseconds) that has passed since the previous call to recordDelta() and records that amount in the histogram.

• reset(): void;

  Resets the collected histogram data.