Package com.codahale.metrics

Class Snapshot

java.lang.Object
com.codahale.metrics.Snapshot
Direct Known Subclasses:
UniformSnapshot, WeightedSnapshot
public abstract class Snapshot extends Object
A statistical snapshot of a Snapshot.

  • Constructor Summary

    Constructors
    Constructor
    Description
    Snapshot()
     

  • Method Summary

    Modifier and Type
    Method
    Description
    abstract void
    dump(OutputStream output)
    Writes the values of the snapshot to the given stream.
    double
    get75thPercentile()
    Returns the value at the 75th percentile in the distribution.
    double
    get95thPercentile()
    Returns the value at the 95th percentile in the distribution.
    double
    get98thPercentile()
    Returns the value at the 98th percentile in the distribution.
    double
    get999thPercentile()
    Returns the value at the 99.9th percentile in the distribution.
    double
    get99thPercentile()
    Returns the value at the 99th percentile in the distribution.
    abstract long
    getMax()
    Returns the highest value in the snapshot.
    abstract double
    getMean()
    Returns the arithmetic mean of the values in the snapshot.
    double
    getMedian()
    Returns the median value in the distribution.
    abstract long
    getMin()
    Returns the lowest value in the snapshot.
    abstract double
    getStdDev()
    Returns the standard deviation of the values in the snapshot.
    abstract double
    getValue(double quantile)
    Returns the value at the given quantile.
    abstract long[]
    getValues()
    Returns the entire set of values in the snapshot.
    abstract int
    size()
    Returns the number of values in the snapshot.

    Methods inherited from class java.lang.Object

    clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

  • Constructor Details

    • Snapshot

      public Snapshot()

  • Method Details

    • getValue

      public abstract double getValue(double quantile)
      Returns the value at the given quantile.
      Parameters:
      quantile - a given quantile, in [0..1]
      Returns:
      the value in the distribution at quantile

    • getValues

      public abstract long[] getValues()
      Returns the entire set of values in the snapshot.
      Returns:
      the entire set of values

    • size

      public abstract int size()
      Returns the number of values in the snapshot.
      Returns:
      the number of values

    • getMedian

      public double getMedian()
      Returns the median value in the distribution.
      Returns:
      the median value

    • get75thPercentile

      public double get75thPercentile()
      Returns the value at the 75th percentile in the distribution.
      Returns:
      the value at the 75th percentile

    • get95thPercentile

      public double get95thPercentile()
      Returns the value at the 95th percentile in the distribution.
      Returns:
      the value at the 95th percentile

    • get98thPercentile

      public double get98thPercentile()
      Returns the value at the 98th percentile in the distribution.
      Returns:
      the value at the 98th percentile

    • get99thPercentile

      public double get99thPercentile()
      Returns the value at the 99th percentile in the distribution.
      Returns:
      the value at the 99th percentile

    • get999thPercentile

      public double get999thPercentile()
      Returns the value at the 99.9th percentile in the distribution.
      Returns:
      the value at the 99.9th percentile

    • getMax

      public abstract long getMax()
      Returns the highest value in the snapshot.
      Returns:
      the highest value

    • getMean

      public abstract double getMean()
      Returns the arithmetic mean of the values in the snapshot.
      Returns:
      the arithmetic mean

    • getMin

      public abstract long getMin()
      Returns the lowest value in the snapshot.
      Returns:
      the lowest value

    • getStdDev

      public abstract double getStdDev()
      Returns the standard deviation of the values in the snapshot.
      Returns:
      the standard value

    • dump

      public abstract void dump(OutputStream output)
      Writes the values of the snapshot to the given stream.
      Parameters:
      output - an output stream