Class HistogramData

Namespace

RocksDbNet

Assembly

RocksDb.Net.dll

A snapshot of histogram data gathered by RocksDb statistics.

public sealed class HistogramData

Inheritance

object

HistogramData

Inherited Members

object.Equals(object)

object.Equals(object, object)

object.GetHashCode()

object.GetType()

object.ReferenceEquals(object, object)

object.ToString()

Remarks

Obtained from GetHistogramData(Histogram). The unit depends entirely on which histogram was asked for: timing histograms are in microseconds, size histograms in bytes, and counting histograms are dimensionless. Nothing here records which, so keep the histogram type alongside the data.

A snapshot, not a live view: the values are read once and do not track later activity. All-zero data means either that no samples were recorded or that no statistics object was attached; the two are indistinguishable.

Properties

Average

The arithmetic mean of the recorded samples.

public double Average { get; }

Property Value

double

Count

How many samples were recorded. Zero means the percentiles and the average carry no information.

public ulong Count { get; }

Property Value

ulong

Max

The largest single sample recorded.

public double Max { get; }

Property Value

double

Median

The 50th percentile of the recorded samples.

public double Median { get; }

Property Value

double

Min

The smallest single sample recorded.

public double Min { get; }

Property Value

double

P95

The 95th percentile of the recorded samples.

public double P95 { get; }

Property Value

double

P99

The 99th percentile of the recorded samples.

public double P99 { get; }

Property Value

double

StdDev

The standard deviation of the recorded samples.

public double StdDev { get; }

Property Value

double

Sum

The total of all recorded samples. Divided by Count this gives the mean, which is also reported directly as Average.

public ulong Sum { get; }

Property Value

ulong