org.apache.jmeter.timers

Class ConstantThroughputTimer

java.lang.Object

org.apache.jmeter.testelement.AbstractTestElement

org.apache.jmeter.timers.ConstantThroughputTimer

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, org.apache.jmeter.gui.Searchable, org.apache.jmeter.testbeans.TestBean, org.apache.jmeter.testelement.TestElement, org.apache.jmeter.testelement.TestStateListener, org.apache.jmeter.timers.Timer

public class ConstantThroughputTimer
extends org.apache.jmeter.testelement.AbstractTestElement
implements org.apache.jmeter.timers.Timer, org.apache.jmeter.testelement.TestStateListener, org.apache.jmeter.testbeans.TestBean

This class implements a constant throughput timer. A Constant Throughtput Timer paces the samplers under its influence so that the total number of samples per unit of time approaches a given constant as much as possible. There are two different ways of pacing the requests: - delay each thread according to when it last ran - delay each thread according to when any thread last ran

See Also:

Serialized Form

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ConstantThroughputTimer.Mode This enum defines the calculation modes used by the ConstantThroughputTimer.

Field Summary

Fields inherited from interface org.apache.jmeter.testelement.TestElement

COMMENTS, ENABLED, GUI_CLASS, NAME, TEST_CLASS

Constructor Summary

Constructors

Constructor and Description
ConstantThroughputTimer() Constructor for a non-configured ConstantThroughputTimer.

Method Summary

Modifier and Type	Method and Description
protected long	calculateCurrentTarget(long currentTime) Calculate the target time by adding the result of private method calculateDelay() to the given currentTime
long	delay() Retrieve the delay to use during test execution.
int	getCalcMode()
double	getThroughput() Gets the configured desired throughput.
void	setCalcMode(int mode)
void	setProperty(org.apache.jmeter.testelement.property.JMeterProperty property) Override the setProperty method in order to convert the original String calcMode property.
void	setThroughput(double throughput) Sets the desired throughput.
void	testEnded()
void	testEnded(java.lang.String host)
void	testStarted() Get the timer ready to compute delays for a new test.
void	testStarted(java.lang.String host)
java.lang.String	toString() Provide a description of this timer class.

Methods inherited from class org.apache.jmeter.testelement.AbstractTestElement

addPropertiesValues, addProperty, addProperty, addTestElement, canRemove, clear, clearTemporary, clearTestElementChildren, clone, emptyTemporary, equals, getComment, getName, getProperty, getPropertyAsBoolean, getPropertyAsBoolean, getPropertyAsDouble, getPropertyAsFloat, getPropertyAsInt, getPropertyAsInt, getPropertyAsLong, getPropertyAsLong, getPropertyAsString, getPropertyAsString, getSearchableTokens, getThreadContext, getThreadName, hashCode, isEnabled, isRunningVersion, isTemporary, logProperties, mergeIn, propertyIterator, recoverRunningVersion, removeProperty, setComment, setEnabled, setName, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setProperty, setRunningVersion, setTemporary, setThreadContext, setThreadName, traverse, traverseCollection, traverseMap, traverseProperty

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.apache.jmeter.timers.Timer

isModifiable

Methods inherited from interface org.apache.jmeter.testelement.TestElement

removed

Constructor Detail

ConstantThroughputTimer

public ConstantThroughputTimer()

Constructor for a non-configured ConstantThroughputTimer.

Method Detail

setThroughput

public void setThroughput(double throughput)

Sets the desired throughput.

Parameters:

throughput - Desired sampling rate, in samples per minute.

getThroughput

public double getThroughput()

Gets the configured desired throughput.

Returns:

the rate at which samples should occur, in samples per minute.

getCalcMode

public int getCalcMode()

setCalcMode

public void setCalcMode(int mode)

delay

public long delay()

Retrieve the delay to use during test execution.

Specified by:

delay in interface org.apache.jmeter.timers.Timer

See Also:

Timer.delay()

calculateCurrentTarget

protected long calculateCurrentTarget(long currentTime)

Calculate the target time by adding the result of private method calculateDelay() to the given currentTime

Parameters:

currentTime - time in ms

Returns:

new Target time

toString

public java.lang.String toString()

Provide a description of this timer class. TODO: Is this ever used? I can't remember where. Remove if it isn't -- TODO: or obtain text from bean's displayName or shortDescription.

Overrides:

toString in class java.lang.Object

Returns:

the description of this timer class.

testStarted

public void testStarted()

Get the timer ready to compute delays for a new test.

Specified by:

testStarted in interface org.apache.jmeter.testelement.TestStateListener

setProperty

public void setProperty(org.apache.jmeter.testelement.property.JMeterProperty property)

Override the setProperty method in order to convert the original String calcMode property. This used the locale-dependent display value, so caused problems when the language was changed. Note that the calcMode StringProperty is replaced with an IntegerProperty so the conversion only needs to happen once.

Specified by:

setProperty in interface org.apache.jmeter.testelement.TestElement

Overrides:

setProperty in class org.apache.jmeter.testelement.AbstractTestElement

testEnded

public void testEnded()

Specified by:

testEnded in interface org.apache.jmeter.testelement.TestStateListener

testStarted

public void testStarted(java.lang.String host)

Specified by:

testStarted in interface org.apache.jmeter.testelement.TestStateListener

testEnded

public void testEnded(java.lang.String host)

Specified by:

testEnded in interface org.apache.jmeter.testelement.TestStateListener