Struct Window 

pub struct Window { /* private fields */ }

a histogram over the last slots spans of time

Implementations

impl Window

pub fn new(slots: usize, span: u64) -> Window

slots slots of span time units each (at least one of each)

pub fn with_bits(slots: usize, span: u64, bits: u8) -> Window

pub fn slots(&self) -> usize

pub fn bytes(&self) -> usize

the heap memory it holds: its slots and their histograms (none before the first value)

pub fn span(&self) -> u64

pub fn record(&mut self, t: u64, v: u64) -> bool

counts v at time t; false when t lies before the window that ends at the newest time recorded so far

pub fn record_n(&mut self, t: u64, v: u64, n: u32) -> bool

pub fn hist(&self, t: u64) -> Hist

everything in the window at time t as one histogram

pub fn hist_between(&self, from: u64, to: u64) -> Hist

the slots that start in [from, to) as one histogram: what was recorded between two times, to the resolution of the slots; slots the ring no longer holds are left out

pub fn count(&self, t: u64) -> u64

pub fn sum(&self, t: u64) -> u128

pub fn mean(&self, t: u64) -> Option<u64>

pub fn min(&self, t: u64) -> Option<u64>

pub fn max(&self, t: u64) -> Option<u64>

pub fn quantile(&self, t: u64, per_mille: u32) -> Option<u64>

pub fn p50(&self, t: u64) -> Option<u64>

pub fn p95(&self, t: u64) -> Option<u64>

pub fn p99(&self, t: u64) -> Option<u64>

pub fn per_slot(&self, t: u64, per_mille: u32) -> Vec<(u64, u64, Option<u64>)>

one value per slot of the window at time t, oldest first: (start time of the slot, count, quantile or None when the slot is empty)

Trait Implementations

impl Clone for Window

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Window

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

Formats the value using the given formatter.

impl Eq for Window

impl PartialEq for Window

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for Window