Struct Histogram 

pub struct Histogram { /* private fields */ }

Histogram for tracking value distributions (e.g., latency).

Implementations

impl Histogram

pub fn new(bucket_bounds: Vec<f64>) -> Self

Create a new histogram with predefined buckets. Buckets are defined as upper bounds.

pub fn for_latency_ms() -> Self

Create a histogram with exponential buckets for latency (in milliseconds). Creates buckets: 1, 2, 5, 10, 20, 50, 100, 200, 500, 1000, 2000, 5000ms

pub fn for_bandwidth_mbps() -> Self

Create a histogram with exponential buckets for bandwidth (in Mbps).

pub fn record(&mut self, value: f64)

Record a value in the histogram.

pub fn count(&self) -> u64

Get the total count of recorded values.

pub fn sum(&self) -> f64

Get the sum of all recorded values.

pub fn mean(&self) -> f64

Get the mean of recorded values.

pub fn min(&self) -> f64

Get the minimum recorded value.

pub fn max(&self) -> f64

Get the maximum recorded value.

pub fn percentile(&self, p: f64) -> f64

Estimate a percentile from the histogram.

pub fn p50(&self) -> f64

Get P50 (median) latency.

pub fn p95(&self) -> f64

Get P95 latency.

pub fn p99(&self) -> f64

Get P99 latency.

pub fn p999(&self) -> f64

Get P999 (99.9th percentile) latency.

pub fn merge(&mut self, other: &Histogram)

Merge another histogram into this one.

pub fn buckets_info(&self) -> Vec<(f64, u64, u64)>

Get bucket information as a vector of (upper_bound, count, cumulative_count).

Trait Implementations

impl Clone for Histogram

fn clone(&self) -> Histogram

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Histogram

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

Formats the value using the given formatter.