OpenJDK 27 · jdk.jfr.internal.settings.Throttler · APIdia, the JavaDoc alternative

Field Summary

Modifier and Type	Field and Description
private long	accumulatedDebtCarryCount
private long	accumulatedDebtCarryLimit
private volatile ThrottlerWindow	activeWindow
private double	averagePopulationSize
private boolean	disabled
private static final ThrottlerParameters	DISABLED_PARAMETERS
private static final long	EVENT_THROTTLER_OFF
private double	ewmaPopulationSize
private static final long	HOUR
private ThrottlerParameters	lastParameters
private final ReentrantLock	lock
private static final long	MILLIUNITS
private static final long	MINUTE
private long	periodMillis
private final Random	randomGenerator
private long	sampleSize
private static final long	TEN_PER_1000_MS_IN_DAYS
private static final long	TEN_PER_1000_MS_IN_HOURS
private static final long	TEN_PER_1000_MS_IN_MINUTES
private boolean	update
private final ThrottlerWindow	window0
private final ThrottlerWindow	window1

Constructor Summary

Access	Constructor and Description
public	Throttler()

Method Summary

Modifier and Type	Method and Description
private static double	adjustBoundary(double u)
private long	amortizeDebt(ThrottlerWindow expired)
private long	computeAccumulatedDebtCarryLimit(ThrottlerParameters parameters)
private double	computeEwmaAlphaCoefficient(long lookBackCount)
public void	configure(long sampleSize, long periodMillis)
private ThrottlerWindow	configure(ThrottlerParameters parameters, ThrottlerWindow expired)
private void	configure(ThrottlerParameters parameters)
private long	deriveSamplingInterval(double sampleSize, ThrottlerWindow expired)
private double	exponentiallyWeightedMovingAverage(double y, double alpha, double s)
private boolean	is_disabled(long eventSampleSize)
private static long	nextGeometric(double p, double u)
private ThrottlerWindow	nextWindow(ThrottlerWindow expired)
private ThrottlerParameters	nextWindowParameters()
private void	normalize()
private double	projectPopulationSize(ThrottlerWindow expired)
private void	rotateWindow(long ticks)
public boolean	sample(long ticks)
private ThrottlerWindow	setRate(ThrottlerParameters parameters, ThrottlerWindow expired)
private ThrottlerParameters	updateParameters()

Inherited from java.lang.Object:: clone equals finalize getClass hashCode notify notifyAll toString wait wait wait

Field Detail

accumulatedDebtCarryCount	back to summary
private long accumulatedDebtCarryCount

accumulatedDebtCarryLimit	back to summary
private long accumulatedDebtCarryLimit

activeWindow	back to summary
private volatile ThrottlerWindow activeWindow

averagePopulationSize	back to summary
private double averagePopulationSize

disabled	back to summary
private boolean disabled

DISABLED_PARAMETERS	back to summary
private static final ThrottlerParameters DISABLED_PARAMETERS

EVENT_THROTTLER_OFF	back to summary
private static final long EVENT_THROTTLER_OFF

ewmaPopulationSize	back to summary
private double ewmaPopulationSize

HOUR	back to summary
private static final long HOUR

lastParameters	back to summary
private ThrottlerParameters lastParameters

lock	back to summary
private final ReentrantLock lock

MILLIUNITS	back to summary
private static final long MILLIUNITS

MINUTE	back to summary
private static final long MINUTE

periodMillis	back to summary
private long periodMillis

randomGenerator	back to summary
private final Random randomGenerator

sampleSize	back to summary
private long sampleSize

TEN_PER_1000_MS_IN_DAYS	back to summary
private static final long TEN_PER_1000_MS_IN_DAYS

TEN_PER_1000_MS_IN_HOURS	back to summary
private static final long TEN_PER_1000_MS_IN_HOURS

TEN_PER_1000_MS_IN_MINUTES	back to summary
private static final long TEN_PER_1000_MS_IN_MINUTES

update	back to summary
private boolean update

window0	back to summary
private final ThrottlerWindow window0

window1	back to summary
private final ThrottlerWindow window1

Constructor Detail

Throttler	back to summary
public Throttler()

Method Detail

adjustBoundary	back to summary
private static double adjustBoundary(double u)

amortizeDebt	back to summary
private long amortizeDebt(ThrottlerWindow expired)

computeAccumulatedDebtCarryLimit	back to summary
private long computeAccumulatedDebtCarryLimit(ThrottlerParameters parameters)

computeEwmaAlphaCoefficient	back to summary
private double computeEwmaAlphaCoefficient(long lookBackCount)

configure	back to summary
public void configure(long sampleSize, long periodMillis)

configure	back to summary
private ThrottlerWindow configure(ThrottlerParameters parameters, ThrottlerWindow expired)

configure	back to summary
private void configure(ThrottlerParameters parameters)

deriveSamplingInterval	back to summary
private long deriveSamplingInterval(double sampleSize, ThrottlerWindow expired)

exponentiallyWeightedMovingAverage	back to summary
private double exponentiallyWeightedMovingAverage(double y, double alpha, double s)

is_disabled	back to summary
private boolean is_disabled(long eventSampleSize)

nextGeometric	back to summary
private static long nextGeometric(double p, double u)

nextWindow	back to summary
private ThrottlerWindow nextWindow(ThrottlerWindow expired)

nextWindowParameters	back to summary
private ThrottlerParameters nextWindowParameters()

normalize	back to summary
private void normalize()

projectPopulationSize	back to summary
private double projectPopulationSize(ThrottlerWindow expired)

rotateWindow	back to summary
private void rotateWindow(long ticks)

sample	back to summary
public boolean sample(long ticks)

setRate	back to summary
private ThrottlerWindow setRate(ThrottlerParameters parameters, ThrottlerWindow expired)

updateParameters	back to summary
private ThrottlerParameters updateParameters()

public final Class Throttler

Field Summary

Constructor Summary

Method Summary

Field Detail

Constructor Detail

Method Detail