Struct LatencyHistogram 

pub struct LatencyHistogram { /* private fields */ }

Collects latency samples and computes percentile statistics.

Samples are stored unsorted for fast insertion. Sorting happens lazily when percentiles or reports are requested.

Implementations

impl LatencyHistogram

pub fn new() -> Self

Create a new empty histogram.

pub fn with_capacity(capacity: usize) -> Self

Create a histogram pre-allocated for the given capacity.

pub fn record(&mut self, duration: Duration)

Record a latency sample.

pub fn measure<F, R>(&mut self, f: F) -> R

where F: FnOnce() -> R,

Record latency by measuring the duration of a closure.

pub fn count(&self) -> usize

Number of recorded samples.

pub fn is_empty(&self) -> bool

Returns true if no samples have been recorded.

pub fn percentile(&mut self, p: f64) -> Option<Duration>

Compute the value at the given percentile (0.0 to 100.0).

Returns None if no samples have been recorded. Uses nearest-rank method for percentile computation.

pub fn min(&mut self) -> Option<Duration>

Minimum recorded latency.

pub fn max(&mut self) -> Option<Duration>

Maximum recorded latency.

pub fn mean(&self) -> Option<Duration>

Mean (average) latency.

pub fn std_dev(&self) -> Option<Duration>

Standard deviation of latency samples.

pub fn report(&mut self) -> Option<LatencyReport>

Generate a full latency report with all standard percentiles.

pub fn histogram_buckets(&mut self, num_buckets: usize) -> Vec<HistogramBucket>

Build histogram buckets with the specified number of bins.

Returns a list of (bucket_start, bucket_end, count) tuples.

pub fn clear(&mut self)

Clear all recorded samples.

Trait Implementations

impl Default for LatencyHistogram

fn default() -> Self

Returns the “default value” for a type.