Struct PsiLine 

pub struct PsiLine {
    pub avg10: f32,
    pub avg60: f32,
    pub avg300: f32,
    pub total_us: u64,
}

One PSI resource’s some and full averages.

/proc/pressure/<resource> reports two lines:

some avg10=0.00 avg60=0.00 avg300=0.00 total=0
full avg10=0.00 avg60=0.00 avg300=0.00 total=0

some is the share of wall time during which at least one task was stalled; full is the share during which every runnable task was stalled, i.e. the machine genuinely had nothing to run.

All four resources report both lines, cpu included. An earlier revision of this comment claimed cpu had no full line — that is wrong, and checking a real /proc/pressure/cpu (Linux 6.x) shows both. The two lines mean slightly different things for cpu (a task runnable-but-not-running is some; the whole CPU idle while tasks wait is full), which is exactly why the kernel reports both. Code here must not assume has_full is false for any resource.

Fields

avg10: f32

Percentage of wall time stalled, averaged over 10 s.

avg60: f32

Percentage of wall time stalled, averaged over 60 s.

avg300: f32

Percentage of wall time stalled, averaged over 300 s.

total_us: u64

Total microseconds stalled since boot. Cumulative, so it can be used for a rate the same way the network counters are.

Trait Implementations

impl Clone for PsiLine

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 PsiLine

impl Debug for PsiLine

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

Formats the value using the given formatter.

impl Default for PsiLine

fn default() -> Self

Returns the “default value” for a type.

impl PartialEq for PsiLine

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for PsiLine