Struct DelayStats 

pub struct DelayStats {
    pub cpu_delay_ns: u64,
    pub blkio_delay_ns: u64,
    pub swapin_delay_ns: u64,
    pub elapsed_us: u64,
}

Cumulative delay counters for one task, all in nanoseconds, plus the task’s elapsed wall-clock life in microseconds.

Cumulative rather than a percentage because the caller owns the previous sample: turning two samples into a percentage needs the interval, and a DelayStats that stored a percentage would have to be read twice per tick.

Fields

cpu_delay_ns: u64

Time spent runnable but not on a CPU.

blkio_delay_ns: u64

Time spent waiting for synchronous block I/O.

swapin_delay_ns: u64

Time spent waiting for a page to be swapped in.

elapsed_us: u64

The task’s elapsed wall-clock life, in microseconds.

Implementations

impl DelayStats

pub fn total_delay_ns(self) -> u64

Total time spent waiting, in nanoseconds.

pub fn cpu_percent(self) -> Option<f32>

Share of the task’s life spent waiting on a CPU, in percent.

None when the elapsed time is zero, which is the state of a task that has not been sampled twice yet; a percentage of nothing is not zero.

pub fn blkio_percent(self) -> Option<f32>

pub fn swapin_percent(self) -> Option<f32>

Trait Implementations

impl Clone for DelayStats

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 DelayStats

impl Debug for DelayStats

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

Formats the value using the given formatter.

impl Default for DelayStats

fn default() -> Self

Returns the “default value” for a type.

impl Eq for DelayStats

impl PartialEq for DelayStats

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for DelayStats