Struct metered::hdr_histogram::HdrHistogram

pub struct HdrHistogram { /* private fields */ }

An High-Dynamic Range Histogram

HdrHistograms can record and analyze sampled data in low-latency applications. Read more about HDR Histograms on http://hdrhistogram.org/

This structure uses the hdrhistogram crate under the hood.

Implementations

impl HdrHistogram

pub fn with_bound(max_bound: u64) -> Self

Instantiates a new HdrHistogram with a max_bound

For instance, a max_bound of 60 * 60 * 1000 will allow to record durations varying from 1 millisecond to 1 hour.

pub fn record(&mut self, value: u64)

Records a value to the histogram

This is a saturating record: if the value is higher than max_bound, max_bound will be recorded instead.

pub fn clear(&mut self)

Clears the values of the histogram

pub fn len(&self) -> u64

Get the number of recorded values in the histogram.

pub fn min(&self) -> u64

Get the lowest recorded value level in the histogram. If the histogram has no recorded values, the value returned will be 0.

pub fn max(&self) -> u64

Get the highest recorded value level in the histogram. If the histogram has no recorded values, the value returned is undefined.

pub fn mean(&self) -> f64

Get the computed mean value of all recorded values in the histogram.

pub fn stdev(&self) -> f64

Get the computed standard deviation of all recorded values in the histogram

pub fn p90(&self) -> u64

Get the value at the 90% quantile.

pub fn p95(&self) -> u64

Get the value at the 95% quantile.

pub fn p99(&self) -> u64

Get the value at the 99% quantile.

pub fn p999(&self) -> u64

Get the value at the 99.9% quantile.

pub fn p9999(&self) -> u64

Get the value at the 99.99% quantile.

Trait Implementations

impl Clone for HdrHistogram

fn clone(&self) -> HdrHistogram

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for HdrHistogram

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Serialize for HdrHistogram

fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where
    S: Serializer, 

Serialize this value into the given Serde serializer.