Struct histogram::CompactHistogram

pub struct CompactHistogram {
    pub m: u32,
    pub r: u32,
    pub n: u32,
    pub index: Vec<usize>,
    pub count: Vec<u32>,
}

A CompactHistogram is a sparse, columnar representation of the 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

m: u32

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

r: u32

n: u32

index: Vec<usize>

indices for the non-zero buckets in the histogram

count: Vec<u32>

histogram bucket counts corresponding to the indices

Trait Implementations

impl Default for CompactHistogram

fn default() -> CompactHistogram

Returns the “default value” for a type.

impl<'de> Deserialize<'de> for CompactHistogram

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

Deserialize this value from the given Serde deserializer.

impl From<&Histogram> for CompactHistogram

fn from(histogram: &Histogram) -> Self

Converts to this type from the input type.

impl Serialize for CompactHistogram

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

Serialize this value into the given Serde serializer.

impl TryFrom<&CompactHistogram> for Histogram

type Error = Error

The type returned in the event of a conversion error.

fn try_from(h: &CompactHistogram) -> Result<Self, Self::Error>

Performs the conversion.