Struct SwapSnapshot 

pub struct SwapSnapshot {
    pub total_bytes: u64,
    pub used: MetricState<u64>,
    pub usage: MetricState<Percent>,
    pub in_rate: MetricState<Rate>,
    pub out_rate: MetricState<Rate>,
}

Swap capacity and activity.

in_rate and out_rate are the metrics that actually indicate memory distress: a large but idle swap file is unremarkable, while sustained swap-in on a small one is not (§11.2).

Fields

total_bytes: u64

Configured swap size. Zero means swap is disabled, which is a fact rather than an unavailable metric.

used: MetricState<u64>

Swap currently in use.

usage: MetricState<Percent>

Share of swap in use.

in_rate: MetricState<Rate>

Pages read back from swap per second.

out_rate: MetricState<Rate>

Pages written to swap per second.

Implementations

impl SwapSnapshot

pub const fn is_enabled(&self) -> bool

Whether swap is configured at all.

pub const fn disabled() -> Self

A snapshot for a system with swap disabled.

Trait Implementations

impl Clone for SwapSnapshot

fn clone(&self) -> SwapSnapshot

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for SwapSnapshot

impl Debug for SwapSnapshot

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

Formats the value using the given formatter.

impl PartialEq for SwapSnapshot

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for SwapSnapshot