Struct rpcperf_dataspec::histogram::Histogram

pub struct Histogram {
    pub grouping_power: u8,
    pub max_value_power: u8,
    pub index: Vec<usize>,
    pub count: Vec<u64>,
}

This histogram is a sparse, columnar representation of the regular Histogram. It is significantly smaller than a regular Histogram when a large number of buckets are zero, which is a frequent occurence; consequently it is used as the serialization format of the Histogram. It stores an individual vector for each field of non-zero buckets. Assuming index[0] = n, (index[0], count[0]) corresponds to the nth bucket.

Fields

grouping_power: u8

parameters representing the resolution and the range of the histogram tracking request latencies

max_value_power: u8

index: Vec<usize>

indices for the non-zero buckets in the histogram

count: Vec<u64>

histogram bucket counts corresponding to the indices

Implementations

impl Histogram

pub fn merge(&self, h: &Histogram) -> Result<Histogram, Error>

Merges two Histograms and returns the results in a new Histogram.

Both histograms must have the same configuration parameters. Buckets which have values in both histograms are allowed to wrap.

Trait Implementations

impl Debug for Histogram

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

Formats the value using the given formatter.

impl Default for Histogram

fn default() -> Histogram

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for Histogram

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl From<&Snapshot> for Histogram

fn from(snapshot: &Snapshot) -> Self

Converts to this type from the input type.

impl PartialEq for Histogram

fn eq(&self, other: &Histogram) -> bool

This method tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

This method tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for Histogram

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 Histogram