seda.sandStorm.internal
Class ResponseTimeControllerMulticlass

java.lang.Object
  seda.sandStorm.internal.ResponseTimeController
      seda.sandStorm.internal.ResponseTimeControllerDirect
          seda.sandStorm.internal.ResponseTimeControllerMulticlass

All Implemented Interfaces:

ResponseTimeControllerIF

public class ResponseTimeControllerMulticlass
extends ResponseTimeControllerDirect

An implementation of ResponseTimeController that uses a direct adjustment of queue thresholds based on the error in the 90th percentile response time. Allows multiple class SLAs.

Nested Class Summary

(package private) class

ResponseTimeControllerMulticlass.cinfo

Field Summary

private static double	ADDITIVE_INCREASE
private ResponseTimeControllerMulticlass.cinfo[]	carr
private static boolean	DEBUG
private boolean	enabled
private static double	HIGH_WATER
private static int	INIT_DEPTH
private static double	INIT_RATE
private static double	LOW_WATER
private static int	LOWCOUNT_THRESH
private static int	MAX_CLASSES
private static double	MAX_RATE
private static int	MEASUREMENT_SIZE
private static long	MEASUREMENT_TIME
private static double	MIN_90th
private static double	MIN_RATE
private static double	MULTIPLICATIVE_DECREASE
private static double	MULTIPLICATIVE_DECREASE_HIPRIO
private static double	MULTIPLICATIVE_DECREASE_LOWPRIO
private static double	MULTIPLICATIVE_INCREASE
private java.lang.String	name
private static int	NINETIETH
private int	NUM_CLASSES
private static boolean	SAVE_MAX_RATE
private static double	SMOOTH_CONST

Fields inherited from class seda.sandStorm.internal.ResponseTimeControllerDirect

INIT_THRESHOLD, MAX_THRESHOLD, MIN_THRESHOLD

Fields inherited from class seda.sandStorm.internal.ResponseTimeController

pred, stage, targetRT

Constructor Summary

ResponseTimeControllerMulticlass(ManagerIF mgr, StageWrapperIF stage)

Method Summary

void	adjustThreshold(QueueElementIF[] fetched, long procTime) Invoked by the stage's thread manager to adjust admission control parameters.
private double	rateAdd(double err)

Methods inherited from class seda.sandStorm.internal.ResponseTimeControllerDirect

disable, enable

Methods inherited from class seda.sandStorm.internal.ResponseTimeController

getTarget, setTarget

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

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Constant Field Values

MEASUREMENT_SIZE

private static final int MEASUREMENT_SIZE

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Constant Field Values

MEASUREMENT_TIME

private static final long MEASUREMENT_TIME

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Constant Field Values

SMOOTH_CONST

private static final double SMOOTH_CONST

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Constant Field Values

NINETIETH

private static final int NINETIETH

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Constant Field Values

LOW_WATER

private static final double LOW_WATER

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Constant Field Values

HIGH_WATER

private static final double HIGH_WATER

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Constant Field Values

ADDITIVE_INCREASE

private static final double ADDITIVE_INCREASE

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Constant Field Values

MULTIPLICATIVE_INCREASE

private static final double MULTIPLICATIVE_INCREASE

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Constant Field Values

MULTIPLICATIVE_DECREASE

private static final double MULTIPLICATIVE_DECREASE

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Constant Field Values

MULTIPLICATIVE_DECREASE_LOWPRIO

private static final double MULTIPLICATIVE_DECREASE_LOWPRIO

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Constant Field Values

MULTIPLICATIVE_DECREASE_HIPRIO

private static final double MULTIPLICATIVE_DECREASE_HIPRIO

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Constant Field Values

INIT_RATE

private static final double INIT_RATE

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Constant Field Values

INIT_DEPTH

private static final int INIT_DEPTH

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Constant Field Values

MAX_RATE

private static final double MAX_RATE

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Constant Field Values

MIN_RATE

private static final double MIN_RATE

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Constant Field Values

MIN_90th

private static final double MIN_90th

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Constant Field Values

LOWCOUNT_THRESH

private static final int LOWCOUNT_THRESH

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Constant Field Values

SAVE_MAX_RATE

private static final boolean SAVE_MAX_RATE

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Constant Field Values

MAX_CLASSES

private static final int MAX_CLASSES

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Constant Field Values

NUM_CLASSES

private int NUM_CLASSES

name

private java.lang.String name

enabled

private boolean enabled

carr

private ResponseTimeControllerMulticlass.cinfo[] carr

Constructor Detail

ResponseTimeControllerMulticlass

public ResponseTimeControllerMulticlass(ManagerIF mgr,
                                        StageWrapperIF stage)
                                 throws java.lang.IllegalArgumentException

Throws:

java.lang.IllegalArgumentException

Method Detail

rateAdd

private double rateAdd(double err)

adjustThreshold

public void adjustThreshold(QueueElementIF[] fetched,
                            long procTime)

Description copied from interface: ResponseTimeControllerIF

Invoked by the stage's thread manager to adjust admission control parameters.

Specified by:

adjustThreshold in interface ResponseTimeControllerIF

Overrides:

adjustThreshold in class ResponseTimeControllerDirect