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VectorSegmentDropPolicy

nodedb_vector::mmap_segment::format

Struct VectorSegmentDropPolicy 

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pub struct VectorSegmentDropPolicy { /* private fields */ }
Expand description

Drop-time page-cache policy for a vector segment.

HNSW traversal touches a small fraction of a segment’s pages. When the segment is dropped we hint the kernel that the residual pages can be evicted so they don’t crowd hotter engines’ working sets.

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impl VectorSegmentDropPolicy

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pub const fn new(dontneed_on_drop: bool) -> Self

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pub const fn keep_resident() -> Self

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pub const fn dontneed_on_drop(self) -> bool

Trait Implementations§

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impl Clone for VectorSegmentDropPolicy

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fn clone(&self) -> VectorSegmentDropPolicy

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

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

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

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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 Default for VectorSegmentDropPolicy

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fn default() -> Self

Returns the “default value” for a type. Read more
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impl Copy for VectorSegmentDropPolicy

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

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> ArchivePointee for T

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type ArchivedMetadata = ()

The archived version of the pointer metadata for this type.
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fn pointer_metadata( _: &<T as ArchivePointee>::ArchivedMetadata, ) -> <T as Pointee>::Metadata

Converts some archived metadata to the pointer metadata for itself.
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impl<T> Borrow<T> for T
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fn borrow(&self) -> &T

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

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impl<T> CloneToUninit for T
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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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fn from(t: T) -> T

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fn instrument(self, span: Span) -> Instrumented<Self>

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fn into(self) -> U

Calls U::from(self).

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fn layout_raw(_: <T as Pointee>::Metadata) -> Result<Layout, LayoutError>

Returns the layout of the type.
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impl<T, N1, N2> Niching<NichedOption<T, N1>> for N2
where T: SharedNiching<N1, N2>, N1: Niching<T>, N2: Niching<T>,

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unsafe fn is_niched(niched: *const NichedOption<T, N1>) -> bool

Returns whether the given value has been niched. Read more
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Writes data to out indicating that a T is niched.
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impl<T> Pointee for T

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type Metadata = ()

The metadata type for pointers and references to this type.
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type Output = T

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fn to_subset(&self) -> Option<SS>

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Use with care! Same as self.to_subset but without any property checks. Always succeeds.
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type Owned = T

The resulting type after obtaining ownership.
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fn clone_into(&self, target: &mut T)

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type Error = Infallible

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