Struct CompactionStats 

pub struct CompactionStats {
    pub allocated_nodes: u64,
    pub live_nodes: u64,
    pub reclaimable_nodes: u64,
    pub allocated_edges: u64,
    pub live_edges: u64,
    pub reclaimable_edges: u64,
}

Cheap snapshot of row-space pressure before compaction.

Deletes clear heavyweight row payloads immediately, but the row slots and stable id mappings remain until compaction. These counters let maintenance policy decide whether a dense rebuild is worth scheduling without first performing that rebuild.

Fields

allocated_nodes: u64

Allocated node rows, including live rows and reclaimable dead rows.

live_nodes: u64

Alive node rows.

reclaimable_nodes: u64

Dead node rows that a compaction pass can reclaim.

allocated_edges: u64

Allocated edge rows, including live rows and reclaimable dead rows.

live_edges: u64

Alive edge rows.

reclaimable_edges: u64

Dead edge rows that a compaction pass can reclaim.

Implementations

impl CompactionStats

pub fn from_graph(graph: &SeleneGraph) -> Self

Build compaction counters for graph without rebuilding any rows.

pub const fn allocated_rows(self) -> u64

Total allocated node and edge rows.

pub const fn live_rows(self) -> u64

Total alive node and edge rows.

pub const fn reclaimable_rows(self) -> u64

Total reclaimable dead node and edge rows.

pub const fn is_dense(self) -> bool

True when no dead rows remain to compact.

pub fn reclaimable_row_basis_points(self) -> u64

Return reclaimable rows divided by allocated rows, scaled by 10,000.

pub fn compaction_recommended(self) -> bool

Return true when current row-space pressure merits maintenance compaction.

The recommendation is diagnostic only: reads and writes never compact automatically, and callers still decide when to run maintenance.

Trait Implementations

impl Clone for CompactionStats

fn clone(&self) -> CompactionStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for CompactionStats

impl Debug for CompactionStats

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

Formats the value using the given formatter.

impl Default for CompactionStats

fn default() -> CompactionStats

Returns the “default value” for a type.

impl Eq for CompactionStats

impl PartialEq for CompactionStats

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl StructuralPartialEq for CompactionStats