Struct LatencyReport 

pub struct LatencyReport {
    pub query_count: usize,
    pub mean_us: f64,
    pub min_us: f64,
    pub max_us: f64,
    pub p50_us: f64,
    pub p95_us: f64,
    pub p99_us: f64,
    pub qps: f64,
}

Summary of a per-query latency measurement.

All latency values are reported in microseconds. Percentiles use the nearest-rank method: for a sorted (ascending) sample of n values, p_q is the value at index clamp(ceil(q × n) − 1, 0, n − 1). This matches Criterion and hdrhistogram defaults — every reported percentile is an observed latency, never an interpolation.

qps is single-threaded throughput derived as query_count / sum_of_latencies_seconds. Warm-up samples are excluded from every field.

Examples

use iqdb_eval::LatencyReport;

let r = LatencyReport {
    query_count: 1_000,
    mean_us: 250.0, min_us: 100.0, max_us: 900.0,
    p50_us: 220.0, p95_us: 600.0, p99_us: 850.0,
    qps: 4_000.0,
};
assert!(r.p50_us <= r.p95_us);
assert!(r.p95_us <= r.p99_us);

Fields

query_count: usize

The number of queries the report was aggregated over (warm-up queries are not included).

mean_us: f64

Arithmetic mean of per-query latency, in microseconds.

min_us: f64

Smallest per-query latency observed, in microseconds.

max_us: f64

Largest per-query latency observed, in microseconds.

p50_us: f64

50th-percentile (median) per-query latency, in microseconds.

p95_us: f64

95th-percentile per-query latency, in microseconds.

p99_us: f64

99th-percentile per-query latency, in microseconds.

qps: f64

Single-threaded throughput: query_count / total_latency_seconds.

Trait Implementations

impl Clone for LatencyReport

fn clone(&self) -> LatencyReport

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for LatencyReport

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

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for LatencyReport

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for LatencyReport

fn eq(&self, other: &LatencyReport) -> 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 Serialize for LatencyReport

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

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LatencyReport