pub struct NodeStats {
pub node_label: String,
pub actual_time_ms: f64,
pub actual_rows_in: u64,
pub actual_rows_out: u64,
pub loops: u64,
pub estimated: bool,
}Expand description
Per-plan-node estimated execution statistics.
All values in this struct are synthetic heuristics derived from the
plan-global ActualStats::actual_time_ms using fixed weight fractions
– they are not individually measured per node. The estimated
field is always true until real per-node instrumentation lands
(#467-#469).
Field names use the actual_ prefix for forward-compatibility with
the future instrumented variant; the estimated flag distinguishes
the two modes at runtime.
Fields§
§node_label: StringNode label (e.g. “VectorSearch”, “Filter”, “Limit”).
actual_time_ms: f64Estimated wall-clock time for this node in milliseconds.
Derived by distributing the total actual_time_ms across nodes using
normalized weight fractions – NOT a real per-node measurement.
Foundational for the CBO feedback loop; will be replaced by
instrumented timing (#467-#469).
actual_rows_in: u64Estimated rows entering this node (heuristic approximation).
actual_rows_out: u64Estimated rows leaving this node (heuristic approximation).
loops: u64Number of loop iterations (1 for non-looping nodes).
estimated: boolWhen true, actual_time_ms, actual_rows_in and actual_rows_out
are heuristic estimates derived from fixed proportions, not real
per-node measurements. Will become false once instrumented timing
lands (#467-#469).
Trait Implementations§
Source§impl<'de> Deserialize<'de> for NodeStats
impl<'de> Deserialize<'de> for NodeStats
Source§fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where
__D: Deserializer<'de>,
Source§impl From<&NodeStats> for NodeStatsResponse
Available on crate feature persistence only.
impl From<&NodeStats> for NodeStatsResponse
persistence only.Auto Trait Implementations§
impl Freeze for NodeStats
impl RefUnwindSafe for NodeStats
impl Send for NodeStats
impl Sync for NodeStats
impl Unpin for NodeStats
impl UnsafeUnpin for NodeStats
impl UnwindSafe for NodeStats
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