Enum oci_spec::runtime::IOPriorityClass

source ·
pub enum IOPriorityClass {
    IoprioClassRt,
    IoprioClassBe,
    IoprioClassIdle,
}
Expand description

IOPriorityClass represents an I/O scheduling class.

Variants§

§

IoprioClassRt

This is the realtime io class. This scheduling class is given higher priority than any other in the system, processes from this class are given first access to the disk every time. Thus it needs to be used with some care, one io RT process can starve the entire system. Within the RT class, there are 8 levels of class data that determine exactly how much time this process needs the disk for on each service. In the future this might change to be more directly mappable to performance, by passing in a wanted data rate instead

§

IoprioClassBe

This is the best-effort scheduling class, which is the default for any process that hasn’t set a specific io priority. The class data determines how much io bandwidth the process will get, it’s directly mappable to the cpu nice levels just more coarsely implemented. 0 is the highest BE prio level, 7 is the lowest. The mapping between cpu nice level and io nice level is determined as: io_nice = (cpu_nice + 20) / 5.

§

IoprioClassIdle

This is the idle scheduling class, processes running at this level only get io time when no one else needs the disk. The idle class has no class data, since it doesn’t really apply here.

Trait Implementations§

source§

impl Clone for IOPriorityClass

source§

fn clone(&self) -> IOPriorityClass

Returns a copy of the value. Read more
1.0.0 · source§

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

Performs copy-assignment from source. Read more
source§

impl Debug for IOPriorityClass

source§

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

Formats the value using the given formatter. Read more
source§

impl Default for IOPriorityClass

source§

fn default() -> Self

Returns the “default value” for a type. Read more
source§

impl<'de> Deserialize<'de> for IOPriorityClass

source§

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>
where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
source§

impl Display for IOPriorityClass

source§

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

Formats the value using the given formatter. Read more
source§

impl FromStr for IOPriorityClass

source§

type Err = ParseError

The associated error which can be returned from parsing.
source§

fn from_str(s: &str) -> Result<IOPriorityClass, <Self as FromStr>::Err>

Parses a string s to return a value of this type. Read more
source§

impl PartialEq for IOPriorityClass

source§

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

Tests for self and other values to be equal, and is used by ==.
1.0.0 · source§

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

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.
source§

impl Serialize for IOPriorityClass

source§

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

Serialize this value into the given Serde serializer. Read more
source§

impl TryFrom<&str> for IOPriorityClass

source§

type Error = ParseError

The type returned in the event of a conversion error.
source§

fn try_from(s: &str) -> Result<IOPriorityClass, <Self as TryFrom<&str>>::Error>

Performs the conversion.
source§

impl Copy for IOPriorityClass

source§

impl Eq for IOPriorityClass

source§

impl StructuralPartialEq for IOPriorityClass

Auto Trait Implementations§

Blanket Implementations§

source§

impl<T> Any for T
where T: 'static + ?Sized,

source§

fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
source§

impl<T> Borrow<T> for T
where T: ?Sized,

source§

fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
source§

impl<T> BorrowMut<T> for T
where T: ?Sized,

source§

fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
source§

impl<T> CloneToUninit for T
where T: Clone,

source§

unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dst. Read more
source§

impl<T> From<T> for T

source§

fn from(t: T) -> T

Returns the argument unchanged.

source§

impl<T, U> Into<U> for T
where U: From<T>,

source§

fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

source§

impl<T> ToOwned for T
where T: Clone,

source§

type Owned = T

The resulting type after obtaining ownership.
source§

fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
source§

fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
source§

impl<T> ToString for T
where T: Display + ?Sized,

source§

default fn to_string(&self) -> String

Converts the given value to a String. Read more
source§

impl<T, U> TryFrom<U> for T
where U: Into<T>,

source§

type Error = Infallible

The type returned in the event of a conversion error.
source§

fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
source§

impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

source§

type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
source§

fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
source§

impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,