EXPERIMENTAL. calculates percentiles over numbers. Returns one event with a field for each of the percentiles specified in the percentiles parameter. Fields are named like by appending _ to the values specified in the percentiles parameter.For example the event could contain the fields _50, _75 and _99. Input can be a number OR the special format for the moment sketch “[min,max,Σv⁰,Σv¹,Σv²,…]” used for client-side computed sketches.
| Name | Type | Required | Default | Description |
|---|---|---|---|---|
| field | string | Yes | Specifies the field for which to calculate percentiles. The field must contain numbers | |
| k | number | No | 5 | Specifies the order of the underlying polynomial. |
| percentiles | [number] | No | [50, 75, 99] | Specifies which percentiles to calculate. An example is [50, 75, 99] |
| as | string | No | prefix of output fields |
field is the unnamed parameter.
Calculate 50 75 99 and 99.9 percentiles for events with the field responsetime.
percentile(field=responsetime, percentiles=[50, 75, 99, 99.9])
In a timechart, calculate percentiles for both of the fields r1 and r2.
timechart(function=[percentile(field=r1,as=r1),percentile(field=r2,as=r2)])