Function percentile_sorted

xtask/src/main.rs:4361–4367

(sorted: &[u128], percentile: f64)

}

fn percentile_sorted(sorted: &[u128], percentile: f64) -> Option<u128> {
    if sorted.is_empty() {
        return None;
    }
    let idx = ((sorted.len() - 1) as f64 * percentile).round() as usize;
    sorted.get(idx).copied()
}

fn speed_cases(scale: f64, sql_source: SpeedSqlSource) -> Result<Vec<SpeedCase>> {
    let insert_1k = scaled_count(1_000, scale);