org.apache.jmeter.util

Class Calculator

java.lang.Object

org.apache.jmeter.util.Calculator

public class Calculator
extends Object

Class to calculate various items that don't require all previous results to be saved:

• mean = average
• standard deviation
• minimum
• maximum

Constructor Summary

Constructors

Constructor and Description
Calculator()
Calculator(String label)

Method Summary

Modifier and Type	Method and Description
void	addBytes(long newValue) add received bytes
void	addSample(SampleResult res) Add details for a sample result, which may consist of multiple samples.
void	clear()
double	getAvgPageBytes() calculates the average page size, which means divide the bytes by number of samples.
double	getBytesPerSecond() Throughput in bytes / second
int	getCount()
double	getErrorPercentage() Returns the raw double value of the percentage of samples with errors that were recorded.
double	getKBPerSecond() Sent Throughput in kilobytes / second
String	getLabel()
long	getMax()
double	getMean()
Number	getMeanAsNumber()
long	getMin()
double	getRate() Returns the throughput associated to this sampler in requests per second.
double	getSentBytesPerSecond() Sent bytes / second
double	getSentKBPerSecond() Sent bytes throughput in kilobytes / second
double	getStandardDeviation()
long	getTotalBytes()

Methods inherited from class java.lang.Object

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

Constructor Detail

Calculator

public Calculator()

Calculator

public Calculator(String label)

Method Detail

clear

public void clear()

addSample

public void addSample(SampleResult res)

Add details for a sample result, which may consist of multiple samples. Updates the number of bytes read and sent, error count, startTime and elapsedTime

Parameters:

res - the sample result; might represent multiple values

addBytes

public void addBytes(long newValue)

add received bytes

Parameters:

newValue - received bytes

getTotalBytes

public long getTotalBytes()

getMean

public double getMean()

getMeanAsNumber

public Number getMeanAsNumber()

getStandardDeviation

public double getStandardDeviation()

getMin

public long getMin()

getMax

public long getMax()

getCount

public int getCount()

getLabel

public String getLabel()

getErrorPercentage

public double getErrorPercentage()

Returns the raw double value of the percentage of samples with errors that were recorded. (Between 0.0 and 1.0)

Returns:

the raw double value of the percentage of samples with errors that were recorded.

getRate

public double getRate()

Returns the throughput associated to this sampler in requests per second. May be slightly skewed because it takes the timestamps of the first and last samples as the total time passed, and the test may actually have started before that start time and ended after that end time.

Returns:

throughput associated to this sampler in requests per second

getAvgPageBytes

public double getAvgPageBytes()

calculates the average page size, which means divide the bytes by number of samples.

Returns:

average page size in bytes

getBytesPerSecond

public double getBytesPerSecond()

Throughput in bytes / second

Returns:

throughput in bytes/second

getKBPerSecond

public double getKBPerSecond()

Sent Throughput in kilobytes / second

Returns:

Sent Throughput in kilobytes / second

getSentBytesPerSecond

public double getSentBytesPerSecond()

Sent bytes / second

Returns:

throughput in bytes/second

getSentKBPerSecond

public double getSentKBPerSecond()

Sent bytes throughput in kilobytes / second

Returns:

Throughput in kilobytes / second