Struct OveruseDetector 

pub struct OveruseDetector { /* private fields */ }

Turns a filtered delay trend into a Usage, with hysteresis.

Why the debounce

The trend crossing the threshold once means very little — the filter is still noisy, and a single video frame arriving late will do it. Overuse is only declared when the trend stays outside and has not decreased since the last reading and at least two readings agree. Upstream does the same (overuse_detector.go); it is what stops the estimate sawtoothing.

Coming back has no such delay: Normal and Under are declared immediately, because being slow to notice that a path has recovered wastes capacity for as long as it takes to notice.

Implementations

impl OveruseDetector

pub fn new() -> Self

A detector with the draft’s tuning.

pub fn usage(&self) -> Usage

What the detector currently believes.

pub fn threshold_ms(&self) -> f64

The threshold the trend is being compared against, in milliseconds.

pub fn update(&mut self, now: Instant, estimate_ms: f64) -> Usage

Fold in one filtered trend reading and return the resulting usage.

estimate_ms is the kalman-filtered delay gradient; now is when it was measured.

Trait Implementations

impl Clone for OveruseDetector

fn clone(&self) -> OveruseDetector

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for OveruseDetector

impl Debug for OveruseDetector

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

Formats the value using the given formatter.

impl Default for OveruseDetector

fn default() -> Self

Returns the “default value” for a type.