Package jline.lang.layered

Class SetupTask

java.lang.Object

jline.lang.Element

jline.lang.layered.LayeredNetworkElement

jline.lang.layered.Task

jline.lang.layered.SetupTask

All Implemented Interfaces:

Serializable, Copyable

Direct Known Subclasses:

FunctionTask

public class SetupTask
extends Task

SetupTask is a Task whose servers are switched off while idle.

A server that resumes from the off state pays a setup (activation) time before serving the request that woke it up, and it stays available for a delay-off (idle) period after emptying its queue before switching off again. These are the setup and close-down times of a server with vacations; they model on-demand virtual machines and containers, power-managed servers under a timeout policy, warm-up delays, and serverless cold start / keep-alive.

Both times are declared on the base Task class through setSetupTime() and setDelayOffTime(), so this subclass is a naming convenience: a plain Task carrying either time behaves identically.

See Also:

• Task
• Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class jline.lang.layered.LayeredNetworkElement

LayeredNetworkElement.LinConRow, LayeredNetworkElement.ServerPool

Field Summary

Fields inherited from class jline.lang.layered.Task

activities, delayOffTime, delayOffTimeMean, delayOffTimeSCV, entries, fanInSource, fanInValue, fanOutMap, multiplicity, parent, precedences, priority, replication, scheduling, setupTime, setupTimeMean, setupTimeSCV, thinkTime, thinkTimeMean, thinkTimeSCV

Fields inherited from class jline.lang.layered.LayeredNetworkElement

ACTIVITY, CALL, ENTRY, HOST, lcdScaling, lcdScalingPeak, linConA, linConB, linConRows, ljdScaling, ljdScalingPeak, lldScaling, model, PROCESSOR, serverPools, TASK

Fields inherited from class jline.lang.Element

name

Constructor Summary

Constructors

Constructor	Description
SetupTask(LayeredNetwork model, String name)	Constructor with default multiplicity and scheduling.
SetupTask(LayeredNetwork model, String name, int multiplicity)	Constructor with default scheduling strategy (FCFS).
SetupTask(LayeredNetwork model, String name, int multiplicity, SchedStrategy scheduling)	Constructor for SetupTask.

Method Summary

Modifier and Type	Method	Description
SetupTask	on(Processor parent)
SetupTask	setDelayOffTime(double delayOffTime)	Set the delay-off time using a mean value (creates exponential distribution).
SetupTask	setDelayOffTime(Distribution delayOffTime)	Set the delay-off time (teardown time) for the task.
SetupTask	setSetupTime(double setupTime)	Set the setup time using a mean value (creates exponential distribution).
SetupTask	setSetupTime(Distribution setupTime)	Set the setup time (cold start time) for the task.
SetupTask	setThinkTime(double thinkTime)
SetupTask	setThinkTime(Distribution thinkTime)

Methods inherited from class jline.lang.layered.Task

addActivity, addEntry, addPrecedence, addPrecedence, addPrecedence, getActivities, getDelayOffTime, getDelayOffTimeMean, getDelayOffTimeSCV, getEntries, getFanInSource, getFanInValue, getFanOutMap, getMeanHostDemand, getMultiplicity, getParent, getPrecedences, getPriority, getProcessor, getReplication, getScheduling, getSetupTime, getSetupTimeMean, getSetupTimeSCV, getThinkTime, getThinkTimeMean, getThinkTimeSCV, hasSetupDelayoff, removeActivity, setActivity, setAsReferenceTask, setFanIn, setFanOut, setMultiplicity, setPriority, setReplication, setReplyEntry, setScheduling

Methods inherited from class jline.lang.layered.LayeredNetworkElement

addConstraint, addConstraintByName, addServerType, getLinearConstraints, getServerTypes, hasLinearConstraints, hasRateDependence, hasServerPools, setClassDependence, setConstraint, setJointDependence, setLoadDependence

Methods inherited from class jline.lang.Element

getName, setName

Methods inherited from class java.lang.Object

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

Methods inherited from interface jline.lang.Copyable

copy

Constructor Details

SetupTask

public SetupTask(LayeredNetwork model,
 String name,
 int multiplicity,
 SchedStrategy scheduling)

Constructor for SetupTask.

Parameters:

model - The LayeredNetwork model this task belongs to

name - The name of the task

multiplicity - The number of servers that can run concurrently

scheduling - The scheduling strategy for the servers

SetupTask

public SetupTask(LayeredNetwork model,
 String name,
 int multiplicity)

Constructor with default scheduling strategy (FCFS).

SetupTask

public SetupTask(LayeredNetwork model,
 String name)

Constructor with default multiplicity and scheduling.

Method Details

on

public SetupTask on(Processor parent)

Overrides:

on in class Task

setThinkTime

public SetupTask setThinkTime(Distribution thinkTime)

Overrides:

setThinkTime in class Task

setThinkTime

public SetupTask setThinkTime(double thinkTime)

Overrides:

setThinkTime in class Task

setSetupTime

public SetupTask setSetupTime(Distribution setupTime)

Description copied from class: Task

Set the setup time (cold start time) for the task.

Overrides:

setSetupTime in class Task

Parameters:

setupTime - The setup time distribution

Returns:

This Task instance for method chaining

setSetupTime

public SetupTask setSetupTime(double setupTime)

Description copied from class: Task

Set the setup time using a mean value (creates exponential distribution).

Overrides:

setSetupTime in class Task

Parameters:

setupTime - The mean setup time

Returns:

This Task instance for method chaining

setDelayOffTime

public SetupTask setDelayOffTime(Distribution delayOffTime)

Description copied from class: Task

Set the delay-off time (teardown time) for the task.

Overrides:

setDelayOffTime in class Task

Parameters:

delayOffTime - The delay-off time distribution

Returns:

This Task instance for method chaining

setDelayOffTime

public SetupTask setDelayOffTime(double delayOffTime)

Description copied from class: Task

Set the delay-off time using a mean value (creates exponential distribution).

Overrides:

setDelayOffTime in class Task

Parameters:

delayOffTime - The mean delay-off time

Returns:

This Task instance for method chaining