org.cloudbus.cloudsim

Class VmSchedulerTimeShared

java.lang.Object

org.cloudbus.cloudsim.VmScheduler

org.cloudbus.cloudsim.VmSchedulerTimeShared

Direct Known Subclasses:

VmSchedulerTimeSharedOverSubscription

public class VmSchedulerTimeShared
extends VmScheduler

VmSchedulerTimeShared is a VMM allocation policy that allocates one or more Pe to a VM, and allows sharing of PEs by multiple VMs. This class also implements 10% performance degration due to VM migration. This scheduler does not support over-subscription.

Since:

CloudSim Toolkit 1.0

Author:

Rodrigo N. Calheiros, Anton Beloglazov

Constructor Summary

Constructors

Constructor and Description
VmSchedulerTimeShared(List<? extends Pe> pelist) Instantiates a new vm scheduler time shared.

Method Summary

Methods

Modifier and Type	Method and Description
protected boolean	allocatePesForVm(String vmUid, List<Double> mipsShareRequested) Allocate pes for vm.
boolean	allocatePesForVm(Vm vm, List<Double> mipsShareRequested) Allocates PEs for a VM.
void	deallocatePesForAllVms() Releases PEs allocated to all the VMs.
void	deallocatePesForVm(Vm vm) Releases PEs allocated to a VM.
double	getMaxAvailableMips() Returns maximum available MIPS among all the PEs.
protected Map<String,List<Double>>	getMipsMapRequested() Gets the mips map requested.
protected int	getPesInUse() Gets the pes in use.
protected void	setMipsMapRequested(Map<String,List<Double>> mipsMapRequested) Sets the mips map requested.
protected void	setPesInUse(int pesInUse) Sets the pes in use.
protected void	updatePeProvisioning() Update allocation of VMs on PEs.

Methods inherited from class org.cloudbus.cloudsim.VmScheduler

getAllocatedMipsForVm, getAvailableMips, getMipsMap, getPeCapacity, getPeList, getPeMap, getPesAllocatedForVM, getTotalAllocatedMipsForVm, getVmsMigratingIn, getVmsMigratingOut, setAvailableMips, setMipsMap, setPeList, setPeMap, setVmsMigratingIn, setVmsMigratingOut

Methods inherited from class java.lang.Object

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

Constructor Detail

VmSchedulerTimeShared

public VmSchedulerTimeShared(List<? extends Pe> pelist)

Instantiates a new vm scheduler time shared.

Parameters:

pelist - the pelist

Method Detail

allocatePesForVm

public boolean allocatePesForVm(Vm vm,
                       List<Double> mipsShareRequested)

Description copied from class: VmScheduler

Allocates PEs for a VM.

Specified by:

allocatePesForVm in class VmScheduler

Parameters:

vm - the vm

mipsShareRequested - the mips share

Returns:

$true if this policy allows a new VM in the host, $false otherwise

allocatePesForVm

protected boolean allocatePesForVm(String vmUid,
                       List<Double> mipsShareRequested)

Allocate pes for vm.

Parameters:

vmUid - the vm uid

mipsShareRequested - the mips share requested

Returns:

true, if successful

updatePeProvisioning

protected void updatePeProvisioning()

Update allocation of VMs on PEs.

deallocatePesForVm

public void deallocatePesForVm(Vm vm)

Description copied from class: VmScheduler

Releases PEs allocated to a VM.

Specified by:

deallocatePesForVm in class VmScheduler

Parameters:

vm - the vm

deallocatePesForAllVms

public void deallocatePesForAllVms()

Releases PEs allocated to all the VMs.

Overrides:

deallocatePesForAllVms in class VmScheduler

getMaxAvailableMips

public double getMaxAvailableMips()

Returns maximum available MIPS among all the PEs. For the time shared policy it is just all the avaiable MIPS.

Overrides:

getMaxAvailableMips in class VmScheduler

Returns:

max mips

setPesInUse

protected void setPesInUse(int pesInUse)

Sets the pes in use.

Parameters:

pesInUse - the new pes in use

getPesInUse

protected int getPesInUse()

Gets the pes in use.

Returns:

the pes in use

getMipsMapRequested

protected Map<String,List<Double>> getMipsMapRequested()

Gets the mips map requested.

Returns:

the mips map requested

setMipsMapRequested

protected void setMipsMapRequested(Map<String,List<Double>> mipsMapRequested)

Sets the mips map requested.

Parameters:

mipsMapRequested - the mips map requested