Struct DurStats 

pub struct DurStats {
    pub mean: Ewma,
    pub p50: QuantileEst,
    pub p90: QuantileEst,
    pub count: u64,
}

Observed runtimes for a (pool, kind) (seconds).

Fields

mean: Ewma

Exponentially weighted mean runtime.

p50: QuantileEst

Streaming median estimate.

p90: QuantileEst

Streaming 90th-percentile estimate.

count: u64

Number of samples observed.

Implementations

impl DurStats

pub fn observe(&mut self, secs: f64)

Record one runtime, in seconds.

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

Typical runtime: the median once there are a few samples, the mean before that.

pub fn p90(&self) -> Option<Duration>

90th-percentile runtime (the mean while there are fewer than three samples).

Trait Implementations

impl Clone for DurStats

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 DurStats

impl Debug for DurStats

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

Formats the value using the given formatter.

impl Default for DurStats

fn default() -> Self

Returns the “default value” for a type.