Module stats

Statistics utilities.

Structs

SlidingMinMax

Keeps track of the minimum and maximum value over a fixed-size sliding window of samples.

Constants

HISTOGRAM_BYTE_BUCKETS

Buckets that capture sizes of 64 bytes up to a gigabyte

HISTOGRAM_MILLISECOND_BUCKETS 🔒

A standard range of buckets for timing data, measured in seconds. Individual histograms may only need a subset of this range, in which case, see histogram_seconds_buckets below.

HISTOGRAM_SECOND_BUCKETS 🔒

A standard range of buckets for timing data, measured in seconds. Individual histograms may only need a subset of this range, in which case, see histogram_seconds_buckets below.

Functions

histogram_milliseconds_buckets

Returns a Vec of time buckets that are both present in our standard buckets above and within the provided inclusive range. (This makes it more meaningful to compare latency percentiles across histograms if needed, without requiring all metrics to use exactly the same buckets.)

histogram_seconds_buckets

Returns a Vec of time buckets that are both present in our standard buckets above and within the provided inclusive range. (This makes it more meaningful to compare latency percentiles across histograms if needed, without requiring all metrics to use exactly the same buckets.)

po_max 🔒

Like std::cmp::max, but works with PartialOrd values.

po_min 🔒

Like std::cmp::min, but works with PartialOrd values.