Struct MemoryStatus 

pub struct MemoryStatus {
    pub total_bytes: u64,
    pub available_bytes: u64,
    pub free_bytes: u64,
    pub cached_bytes: u64,
    pub swap_total_bytes: u64,
    pub swap_used_bytes: u64,
}

The guest’s own account of machine memory, from /proc/meminfo.

This is what a machine is actually using. The host-side phys_footprint answers a different question — it counts compressed pages at their uncompressed size and keeps counting memory the guest has stopped needing — so it runs well above these figures and should not be read as consumption.

Fields

total_bytes: u64

Total usable RAM the guest sees, in bytes. Slightly below the machine’s configured size: the kernel reserves some before the allocator sees it.

available_bytes: u64

Memory available for new allocations without swapping, in bytes. The figure to report, since free_bytes excludes reclaimable page cache.

free_bytes: u64

Free memory in bytes: never allocated, or released and not reused.

cached_bytes: u64

Page cache in bytes. Counted inside available_bytes.

swap_total_bytes: u64

Swap configured in the guest, in bytes. Zero when the guest has none.

swap_used_bytes: u64

Swap in use, in bytes.

Implementations

impl MemoryStatus

pub fn used_bytes(&self) -> u64

Memory the guest cannot hand back on demand.

Trait Implementations

impl Clone for MemoryStatus

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 MemoryStatus

impl Debug for MemoryStatus

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

Formats the value using the given formatter.

impl Default for MemoryStatus

fn default() -> Self

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for MemoryStatus

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Eq for MemoryStatus

impl PartialEq for MemoryStatus

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

Equality operator ==.

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

Inequality operator !=.

impl Serialize for MemoryStatus

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for MemoryStatus