Struct LedgerSummary 

pub struct LedgerSummary {
    pub sample_count: usize,
    pub overhead_p50_ns: u64,
    pub overhead_p99_ns: u64,
    pub phase_deltas: Vec<PhaseDeltaSummary>,
    pub max_rss_bytes: u64,
    pub samples: Vec<[u64; 10]>,
}

Re-exported so hotl_engine::LedgerSummary resolves alongside EngineEvent::LedgerReport — the loop-overhead instrument (§S1) lives in its own module ([ledger]) since it is self-contained (no dependency on the rest of the engine’s types) and independently unit-tested. What gets flushed at TurnFinished (as an crate::EngineEvent::LedgerReport, never the canon log) and what a CI regression gate consumes.

Fields

sample_count: usize

Samples actually taken this turn, capped at 64 — past the cap this is 64, not the true (dropped) count.

overhead_p50_ns: u64

overhead_p99_ns: u64

phase_deltas: Vec<PhaseDeltaSummary>

max_rss_bytes: u64

samples: Vec<[u64; 10]>

Raw per-sample phase stamps (nanoseconds, process-relative; 0 = absent), in Phase declaration order — the material the p50/p99 fields above are computed from, exposed directly so a consumer isn’t limited to this module’s own aggregation choices.

Trait Implementations

impl Clone for LedgerSummary

fn clone(&self) -> LedgerSummary

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LedgerSummary

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

Formats the value using the given formatter.

impl Serialize for LedgerSummary

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

where __S: Serializer,

Serialize this value into the given Serde serializer.