Struct HugeTlbController

pub struct HugeTlbController { /* private fields */ }

A controller that allows controlling the hugetlb subsystem of a Cgroup.

In essence, using this controller it is possible to limit the use of hugepages in the tasks of the control group.

Implementations

impl HugeTlbController

pub fn new(point: PathBuf, root: PathBuf, v2: bool) -> Self

Constructs a new HugeTlbController with root serving as the root of the control group.

pub fn size_supported(&self, hugetlb_size: &str) -> bool

Whether the system supports hugetlb_size hugepages.

pub fn get_sizes(&self) -> Vec<String>

pub fn failcnt(&self, hugetlb_size: &str) -> Result<u64>

Check how many times has the limit of hugetlb_size hugepages been hit.

pub fn limit_in_bytes(&self, hugetlb_size: &str) -> Result<u64>

Get the limit (in bytes) of how much memory can be backed by hugepages of a certain size (hugetlb_size).

pub fn usage_in_bytes(&self, hugetlb_size: &str) -> Result<u64>

Get the current usage of memory that is backed by hugepages of a certain size (hugetlb_size).

pub fn max_usage_in_bytes(&self, hugetlb_size: &str) -> Result<u64>

Get the maximum observed usage of memory that is backed by hugepages of a certain size (hugetlb_size).

pub fn set_limit_in_bytes(&self, hugetlb_size: &str, limit: u64) -> Result<()>

Set the limit (in bytes) of how much memory can be backed by hugepages of a certain size (hugetlb_size).

Trait Implementations

impl Clone for HugeTlbController

fn clone(&self) -> HugeTlbController

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for HugeTlbController

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

Formats the value using the given formatter.

impl<'a> From<&'a Subsystem> for &'a HugeTlbController

fn from(sub: &'a Subsystem) -> &'a HugeTlbController

Converts to this type from the input type.