ostore.util
Class StatRecorder

java.lang.Object
  |
  +--ostore.util.StatRecorder

All Implemented Interfaces:

QuickSerializable

public class StatRecorder

extends Object

implements QuickSerializable

The StatRecorder class is a utility for recording and analyzing a number of samples for a measurement.

Version:

$Id: StatRecorder.java,v 1.7 2003/01/24 21:01:39 strib Exp $

Author:

Patrick R. Eaton

Constructor Summary

StatRecorder(InputBuffer buffer)

StatRecorder(String name)

StatRecorder(String name, String tag)

Method Summary

void	add(long sample)
void	add(long sample, long count)
void	add(StatRecorder other)
double	getGeometricMean()
String	getHistogram()
String	getHistogram(int bucket_size)
long	getMax()
double	getMean()
long	getMedian()
long	getMin()
long	getNumSamples()
long	getPercentile(double percentile)
double	getStddev()
void	reset()
void	serialize(OutputBuffer buffer) Add the object to the buffer.

Methods inherited from class java.lang.Object

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

Constructor Detail

StatRecorder

public StatRecorder(String name)

StatRecorder

public StatRecorder(String name,
                    String tag)

StatRecorder

public StatRecorder(InputBuffer buffer)

Method Detail

serialize

public void serialize(OutputBuffer buffer)

Description copied from interface: QuickSerializable

Add the object to the buffer.

Specified by:

serialize in interface QuickSerializable

Parameters:

buffer - the output buffer to add the object to

reset

public void reset()

add

public void add(StatRecorder other)

add

public void add(long sample)

add

public void add(long sample,
                long count)

getNumSamples

public long getNumSamples()

getPercentile

public long getPercentile(double percentile)

getMedian

public long getMedian()

getMin

public long getMin()

getMax

public long getMax()

getMean

public double getMean()

getGeometricMean

public double getGeometricMean()

getStddev

public double getStddev()

getHistogram

public String getHistogram()

getHistogram

public String getHistogram(int bucket_size)