Struct StreamWitness 

pub struct StreamWitness {
    pub client_ttft_over_e2e_median: f64,
    pub verdict: StreamVerdict,
    pub source: StreamWitnessSource,
}

PP-27 — the client-side half of the dual witness.

On a live stream the first token arrives long before the last, so ttft / e2e is small. On a replayed one the whole answer lands at once and the ratio approaches 1. The threshold is stream.live_ttft_over_e2e_max in perf-matrix.yaml (PP-33).

Fields

client_ttft_over_e2e_median: f64

Median over completed requests of ttft_ms / (settled_ms − issued_ms).

verdict: StreamVerdict

The verdict the two halves reach together.

source: StreamWitnessSource

Which half the verdict rests on.

Trait Implementations

impl Clone for StreamWitness

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 StreamWitness

impl Debug for StreamWitness

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for StreamWitness

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for StreamWitness

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for StreamWitness

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for StreamWitness