Struct ControllerSnapshot 

pub struct ControllerSnapshot {

    pub expected_rtt: Duration,
    pub baseline_rtt: Duration,
    pub short_rtt: Duration,
    pub long_rtt: Duration,
    pub target_concurrency: f64,
    pub effective_concurrency: f64,
    pub base_rate: f64,
    pub effective_rate: f64,
    pub committed_tat: Instant,
    pub virtual_tail_tat: Option<Instant>,
    pub queued: usize,
    pub inflight: usize,
    pub queue_capacity: usize,
    pub max_inflight: usize,
    pub completed: u64,
    pub failures: u64,
    pub latency_samples: u64,
    pub active_probe: Option<Probe>,
}

A point-in-time view useful for metrics, tests, and P2C load prediction.

Fields

expected_rtt: Duration

Long-term RTT used to convert the concurrency target into a base rate.

baseline_rtt: Duration

Minimum RTT observed within the rolling baseline window.

short_rtt: Duration

Short-term exponentially weighted RTT estimate.

long_rtt: Duration

Long-term exponentially weighted RTT estimate.

target_concurrency: f64

Fractional concurrency selected by the Gradient2 controller.

effective_concurrency: f64

Concurrency implied by the current rate, including any active probe.

base_rate: f64

Requests per second derived from target concurrency and expected RTT.

effective_rate: f64

Current requests per second after applying an active probe, if any.

committed_tat: Instant

The GCRA theoretical arrival time committed by actual dispatches.

virtual_tail_tat: Option<Instant>

Predicted TAT after all current virtual queue reservations.

This is None when the virtual queue is empty.

queued: usize

Number of accepted but not-yet-dispatched reservations.

inflight: usize

Number of dispatched requests awaiting completion.

queue_capacity: usize

Configured maximum number of queued reservations.

max_inflight: usize

Configured emergency cap on dispatched requests.

completed: u64

Number of dispatched requests reported as completed.

failures: u64

Number of unhealthy completions and transport admission failures.

latency_samples: u64

Number of successful RTT samples observed by the latency estimator.

active_probe: Option<Probe>

Temporary probe active at the time of the snapshot, if any.

Trait Implementations

impl Clone for ControllerSnapshot

fn clone(&self) -> ControllerSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for ControllerSnapshot

impl Debug for ControllerSnapshot

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

Formats the value using the given formatter.

impl PartialEq for ControllerSnapshot

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for ControllerSnapshot