Struct BalloonStats

pub struct BalloonStats {

    pub actual_mib: u32,
    pub actual_pages: u32,
    pub available_memory: Option<i64>,
    pub disk_caches: Option<i64>,
    pub free_memory: Option<i64>,
    pub hugetlb_allocations: Option<i64>,
    pub hugetlb_failures: Option<i64>,
    pub major_faults: Option<i64>,
    pub minor_faults: Option<i64>,
    pub swap_in: Option<i64>,
    pub swap_out: Option<i64>,
    pub target_mib: u32,
    pub target_pages: u32,
    pub total_memory: Option<i64>,
}

Provides detailed memory statistics from the balloon device, helping monitor memory usage patterns and performance of the guest VM. These statistics are essential for making informed decisions about memory allocation and identifying potential memory-related issues.

Fields

actual_mib: u32

Actual amount of memory (in MiB) the device is holding

actual_pages: u32

Actual number of pages the device is holding

available_memory: Option<i64>

An estimate of how much memory is available (in bytes) for starting new applications, without pushing the system to swap

disk_caches: Option<i64>

The amount of memory, in bytes, that can be quickly reclaimed without additional I/O. Typically these pages are used for caching files from disk

free_memory: Option<i64>

The amount of memory not being used for any purpose (in bytes)

hugetlb_allocations: Option<i64>

The number of successful hugetlb page allocations in the guest

hugetlb_failures: Option<i64>

The number of failed hugetlb page allocations in the guest

major_faults: Option<i64>

The number of major page faults that have occurred

minor_faults: Option<i64>

The number of minor page faults that have occurred

swap_in: Option<i64>

The amount of memory that has been swapped in (in bytes)

swap_out: Option<i64>

The amount of memory that has been swapped out to disk (in bytes)

target_mib: u32

Target amount of memory (in MiB) the device aims to hold

target_pages: u32

Target number of pages the device aims to hold

total_memory: Option<i64>

The total amount of memory available (in bytes)

Trait Implementations

impl Debug for BalloonStats

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for BalloonStats

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

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl Serialize for BalloonStats

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

where __S: Serializer,

Serialize this value into the given Serde serializer.