Struct Psi 

#[non_exhaustive]
pub struct Psi {
    pub cpu: PsiResource,
    pub memory: PsiResource,
    pub io: PsiResource,
    pub irq: PsiResource,
}

Bundle of PsiResource for the four kernel-exposed resources. Same shape used at both system level (CtprofSnapshot::psi) and per-cgroup (CgroupStats::psi) — the data source differs but the kernel emits the same format and field set in both places.

Fields (Non-exhaustive)

Non-exhaustive structs could have additional fields added in future. Therefore, non-exhaustive structs cannot be constructed in external crates using the traditional Struct { .. } syntax; cannot be matched against without a wildcard ..; and struct update syntax will not work.

cpu: PsiResource

memory: PsiResource

io: PsiResource

irq: PsiResource

IRQ pressure. Only the full half is populated by the kernel (psi_show() sets only_full = res == PSI_IRQ); irq.some is structurally present but always zero. Requires both CONFIG_IRQ_TIME_ACCOUNTING at build AND irqtime_enabled() at runtime (/proc/pressure/irq returns -EOPNOTSUPP per psi_show() (kernel/sched/psi.c) otherwise); runtime irqtime is gated by the tsc=... boot param / irqtime_enabled static branch — when off, the file open fails and the parser leaves this resource at the default all-zero value.

Trait Implementations

impl Clone for Psi

fn clone(&self) -> Psi

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Psi

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

Formats the value using the given formatter.

impl Default for Psi

fn default() -> Psi

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Psi

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for Psi

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl Copy for Psi