Struct Sample 

pub struct Sample {
    pub started_at: Instant,
    pub completed_at: Instant,
    pub bytes: u64,
    pub outcome: Outcome,
}

A single observation of an operation’s behavior, fed to a Controller.

The started_at / completed_at pair should enclose the actual syscall or network round-trip, not the permit acquisition; the controller reasons about service time at the bottleneck, not queueing time ahead of it.

Fields

started_at: Instant

When the operation was submitted to the underlying system.

completed_at: Instant

When the operation reported completion.

bytes: u64

Bytes transferred. Zero for metadata operations.

outcome: Outcome

How the operation concluded.

Implementations

impl Sample

pub fn latency(&self) -> Duration

Wall-clock duration of the measured operation.

Trait Implementations

impl Clone for Sample

fn clone(&self) -> Sample

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Sample

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

Formats the value using the given formatter.

impl Copy for Sample