Struct SearchStats 

pub struct SearchStats {

    pub gen_time: Duration,
    pub search_time: Duration,
    pub lhs_count: usize,
    pub rhs_count: usize,
    pub lhs_tested: usize,
    pub candidates_tested: usize,
    pub candidate_window_total: usize,
    pub candidate_window_max: usize,
    pub candidate_window_max_lhs_postfix: Option<String>,
    pub candidate_window_max_lhs_value: Option<f64>,
    pub candidate_window_max_lhs_derivative: Option<f64>,
    pub candidate_window_max_lhs_complexity: Option<u32>,
    pub strict_gate_rejections: usize,
    pub newton_calls: usize,
    pub newton_success: usize,
    pub pool_insertions: usize,
    pub pool_rejections_error: usize,
    pub pool_rejections_dedupe: usize,
    pub pool_evictions: usize,
    pub pool_final_size: usize,
    pub pool_best_error: f64,
    pub early_exit: bool,
}

Statistics collected during search

Fields

gen_time: Duration

Time spent generating expressions

search_time: Duration

Time spent searching/matching

lhs_count: usize

Number of LHS expressions generated

rhs_count: usize

Number of RHS expressions generated

lhs_tested: usize

Number of LHS expressions tested (after filtering)

candidates_tested: usize

Number of candidate pairs tested (coarse filter)

candidate_window_total: usize

Total number of RHS expressions scanned across all candidate windows

candidate_window_max: usize

Largest RHS candidate window scanned for any single LHS

candidate_window_max_lhs_postfix: Option<String>

Postfix form of the LHS that produced the largest candidate window

candidate_window_max_lhs_value: Option<f64>

LHS value for the largest candidate window

candidate_window_max_lhs_derivative: Option<f64>

LHS derivative for the largest candidate window

candidate_window_max_lhs_complexity: Option<u32>

LHS complexity for the largest candidate window

strict_gate_rejections: usize

Number of candidates rejected by the strict pre-Newton gate

newton_calls: usize

Number of Newton-Raphson calls

newton_success: usize

Number of successful Newton convergences

pool_insertions: usize

Number of matches inserted into pool

pool_rejections_error: usize

Number of matches rejected by pool (error threshold)

pool_rejections_dedupe: usize

Number of matches rejected by pool (dedupe)

pool_evictions: usize

Number of matches evicted from pool

pool_final_size: usize

Final pool size

pool_best_error: f64

Final best error in pool

early_exit: bool

Whether search exited early

Implementations

impl SearchStats

pub fn new() -> Self

pub fn record_candidate_window(&mut self, lhs: &EvaluatedExpr, width: usize)

pub fn merge_search_counters(&mut self, other: &SearchStats)

Merge another stats record’s additive search/pool counters into this one.

Generation-side counts and timing are owned by the caller and are not merged. The largest-candidate-window record keeps whichever side observed the wider window. Used to combine per-thread stats from the turbo matcher.

pub fn candidate_window_avg(&self) -> f64

pub fn candidates_per_pool_insertion(&self) -> f64

pub fn newton_success_rate(&self) -> f64

pub fn pool_attempts(&self) -> usize

pub fn pool_acceptance_rate(&self) -> f64

pub fn print(&self)

Print stats to stdout

Trait Implementations

impl Clone for SearchStats

fn clone(&self) -> SearchStats

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for SearchStats

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

Formats the value using the given formatter.

impl Default for SearchStats

fn default() -> SearchStats

Returns the “default value” for a type.