Struct Histogram 

pub struct Histogram { /* private fields */ }

Snapshot of a duration histogram.

Bucket 0 counts durations below 16µs, bucket i counts durations in [16µs * 2^(i-1), 16µs * 2^i), and the last bucket counts durations of 262.144ms and longer.

Counts are totals since the histogram was created, the distribution over an interval is the delta of two snapshots.

Implementations

impl Histogram

pub fn buckets(&self) -> &[u64; 16]

Returns the bucket counts.

pub fn count(&self) -> u64

Returns the total number of recorded durations.

pub fn bucket_range(idx: usize) -> (Duration, Option<Duration>)

Returns the duration range of a bucket.

The lower bound is inclusive, the upper bound is exclusive and None for the last bucket.

Panics

Panics if idx is not less than HISTOGRAM_BUCKETS.

pub fn delta(&self, prev: &Histogram) -> Histogram

Returns the counts recorded since the prev snapshot.

pub fn merge(&self, other: &Histogram) -> Histogram

Returns the sum of two histograms, for example to combine the histograms of several runtimes.

Trait Implementations

impl Clone for Histogram

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Histogram

impl Debug for Histogram

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

Formats the value using the given formatter.

impl Default for Histogram

fn default() -> Self

Returns the “default value” for a type.

impl Eq for Histogram

impl PartialEq for Histogram

fn eq(&self, other: &Self) -> bool

Equality operator ==.

fn ne(&self, other: &Rhs) -> bool

Inequality operator !=.

impl StructuralPartialEq for Histogram