Enum Level 

#[repr(u8)]
pub enum Level {
    Off = 0,
    Basic = 1,
    Kernel = 2,
}

2026-09-26: The measurement level. Each level measures everything the levels below it measure.

Variants

Off = 0

2026-09-26: Nothing is measured. Every hot-path entry point is one relaxed atomic load and a return: no clock read, no allocation.

Basic = 1

2026-09-26: Device sampling (L0), scheduler, cache, spec and request instruments (L2–L5), and energy attribution.

Kernel = 2

2026-09-26: Basic plus GPU event spans (L1): every serve lane each step, and every eager kernel launch on one step in TelemetryConfig::kernel_span_every.

Implementations

impl Level

pub const NAMES: [&'static str; 3]

2026-09-26: The accepted spellings, in level order. The --telemetry validator checks against this list.

pub const fn as_str(self) -> &'static str

pub const fn from_u8(v: u8) -> Self

2026-09-26: Inverse of self as u8; any other byte reads as Off.

Trait Implementations

impl Clone for Level

fn clone(&self) -> Level

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Level

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

Formats the value using the given formatter.

impl Display for Level

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

Formats the value using the given formatter.

impl FromStr for Level

fn from_str(s: &str) -> Result<Self, ConfigError>

2026-09-26: Exact, lower-case spellings only: Basic, on and 1 are refused.

type Err = ConfigError

The associated error which can be returned from parsing.

impl Hash for Level

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Level

fn cmp(&self, other: &Level) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Level

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

Tests for self and other values to be equal, and is used by ==.

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Level

fn partial_cmp(&self, other: &Level) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Copy for Level

impl Eq for Level

impl StructuralPartialEq for Level