Package org.cloudbus.cloudsim.brokers

Class DatacenterBrokerBestFit

java.lang.Object

org.cloudbus.cloudsim.core.CloudSimEntity

org.cloudbus.cloudsim.brokers.DatacenterBrokerAbstract

org.cloudbus.cloudsim.brokers.DatacenterBrokerSimple

org.cloudbus.cloudsim.brokers.DatacenterBrokerBestFit

All Implemented Interfaces:

Cloneable, Comparable<SimEntity>, Runnable, DatacenterBroker, Identifiable, Nameable, SimEntity

public class DatacenterBrokerBestFit
extends DatacenterBrokerSimple

A implementation of DatacenterBroker that uses a Best Fit mapping between submitted cloudlets and Vm's, trying to place a Cloudlet at the best suitable Vm which can be found (according to the required Cloudlet's PEs). The Broker then places the submitted Vm's at the first Datacenter found. If there isn't capacity in that one, it will try the other ones.

Since:

CloudSim Plus 4.3.8

Author:

Manoel Campos da Silva Filho

Nested Class Summary

Nested classes/interfaces inherited from interface org.cloudbus.cloudsim.core.SimEntity

SimEntity.State

Field Summary

Fields inherited from interface org.cloudbus.cloudsim.brokers.DatacenterBroker

DEF_VM_DESTRUCTION_DELAY, LOGGER, NULL

Fields inherited from interface org.cloudbus.cloudsim.core.SimEntity

NULL

Constructor Summary

Constructors

Constructor	Description
DatacenterBrokerBestFit(CloudSim simulation)	Creates a DatacenterBroker object.

Method Summary

Modifier and Type	Method	Description
Vm	defaultVmMapper(Cloudlet cloudlet)	Selects the VM with the lowest number of PEs that is able to run a given Cloudlet.

Methods inherited from class org.cloudbus.cloudsim.brokers.DatacenterBrokerSimple

defaultDatacenterMapper

Methods inherited from class org.cloudbus.cloudsim.brokers.DatacenterBrokerAbstract

addOnVmsCreatedListener, bindCloudletToVm, closestDatacenterMapper, destroyVm, getCloudletCreatedList, getCloudletFinishedList, getCloudletSubmittedList, getCloudletWaitingList, getDatacenter, getDatacenterList, getFailedVmsRetryDelay, getVmCreatedList, getVmCreationRequests, getVmDestructionDelayFunction, getVmExecList, getVmFailedList, getVmFromCreatedList, getVmsNumber, getVmWaitingList, getWaitingVm, isRetryFailedVms, isSelectClosestDatacenter, isShutdownWhenIdle, processEvent, removeOnVmsCreatedListener, requestDatacentersToCreateWaitingCloudlets, requestIdleVmDestruction, requestShutdownWhenIdle, setCloudletComparator, setDatacenterMapper, setFailedVmsRetryDelay, setSelectClosestDatacenter, setShutdownWhenIdle, setVmComparator, setVmDestructionDelay, setVmDestructionDelayFunction, setVmMapper, shutdown, startInternal, submitCloudlet, submitCloudletList, submitCloudletList, submitCloudletList, submitCloudletList, submitVm, submitVmList, submitVmList, toString

Methods inherited from class org.cloudbus.cloudsim.core.CloudSimEntity

cancelEvent, clone, compareTo, equals, getId, getName, getNextEvent, getNextEvent, getShutdownTime, getSimulation, getStartTime, getState, hashCode, isAlive, isFinished, isStarted, pause, run, run, schedule, schedule, schedule, schedule, schedule, schedule, scheduleFirst, scheduleFirst, scheduleFirstNow, scheduleFirstNow, scheduleNow, scheduleNow, selectEvent, send, send, sendNow, sendNow, setEventBuffer, setId, setName, setSimulation, setState, start, waitForEvent

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Comparable

compareTo

Methods inherited from interface org.cloudbus.cloudsim.core.Identifiable

getId

Methods inherited from interface org.cloudbus.cloudsim.core.Nameable

getName

Methods inherited from interface org.cloudbus.cloudsim.core.SimEntity

getShutdownTime, getSimulation, getStartTime, getState, isAlive, isFinished, isStarted, run, schedule, schedule, schedule, schedule, schedule, schedule, schedule, setName, setSimulation, setState, start

Constructor Details

DatacenterBrokerBestFit

public DatacenterBrokerBestFit(CloudSim simulation)

Creates a DatacenterBroker object.

Parameters:

simulation - The CloudSim instance that represents the simulation the Entity is related to

Method Details

defaultVmMapper

public Vm defaultVmMapper(Cloudlet cloudlet)

Selects the VM with the lowest number of PEs that is able to run a given Cloudlet. In case the algorithm can't find such a VM, it uses the default DatacenterBroker VM mapper as a fallback.

Overrides:

defaultVmMapper in class DatacenterBrokerSimple

Parameters:

cloudlet - the Cloudlet to find a VM to run it

Returns:

the VM selected for the Cloudlet or Vm.NULL if no suitable VM was found

See Also:

• DatacenterBrokerAbstract.setVmMapper(Function)