Migration

ktstr::workload

Struct Migration 

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pub struct Migration {
    pub at_ns: u64,
    pub from_cpu: usize,
    pub to_cpu: usize,
}
Expand description

A single CPU migration event observed by a worker.

No Default impl — a default-constructed Migration would be {at_ns: 0, from_cpu: 0, to_cpu: 0} (a “migration from CPU 0 to CPU 0 at time 0” is a contradiction: a migration where source == dest is not a real migration). Downstream analysis (NUMA migration counts, scheduler-balance ratios) that assumes from_cpu != to_cpu would misread default values as real migrations. Construct every Migration explicitly via Migration::new.

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§at_ns: u64

Nanoseconds since worker start.

§from_cpu: usize

CPU before migration.

§to_cpu: usize

CPU after migration.

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impl Migration

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pub const fn new(at_ns: u64, from_cpu: usize, to_cpu: usize) -> Self

Const constructor for a Migration event. Pair-symmetric with the struct fields; lets Migration::new(ns, from, to) replace Migration { at_ns: ns, from_cpu: from, to_cpu: to } in hand-built test fixtures.

Trait Implementations§

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impl Clone for Migration

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fn clone(&self) -> Migration

Returns a duplicate of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for Migration

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

Formats the value using the given formatter. Read more
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impl<'de> Deserialize<'de> for Migration

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

Deserialize this value from the given Serde deserializer. Read more
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impl Hash for Migration

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fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher. Read more
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fn hash_slice<H>(data: &[Self], state: &mut H)
where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher. Read more
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impl PartialEq for Migration

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fn eq(&self, other: &Migration) -> 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.
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impl Serialize for Migration

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

Serialize this value into the given Serde serializer. Read more
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impl Copy for Migration

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impl Eq for Migration

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impl StructuralPartialEq for Migration

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🔬This is a nightly-only experimental API. (clone_to_uninit)
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