eu.cactosfp7.cactoopt.behaviourinference

Interface ISimpleVMBehaviourInferrer

All Known Implementing Classes:

BehavioureInference

public interface ISimpleVMBehaviourInferrer

Simple interface specifying interactions between CactoSim and the behaviour model inference tooling.

Author:

stier, groenda

Method Summary

Modifier and Type	Method and Description
SimpleVMBehaviour	getBehaviour(double from, double to) Get the behaviour of a VM with Specs stated in the instantiation of the Behaviour inference engine, assuming a simplified resource model.
SimpleVMBehaviour	getBehaviour(String vmUuuid, double from, double to) Get the behaviour of the specified VM, assuming a simplified resource model.
TreeMap<Double,IntervalBehaviourValues>	getBehaviour(String vmUuid, int numberCores, int memory, String hdType, String appType) Get the behaviour of a VM with Specs stated in the instantiation of the Behaviour inference engine, assuming a simplified resource model.

Method Detail

getBehaviour

SimpleVMBehaviour getBehaviour(String vmUuuid,
                               double from,
                               double to)

Get the behaviour of the specified VM, assuming a simplified resource model. The behaviour is fetched for the interval [from,to). The times are specified in simulation time seconds relative to the starting point of the simulation (0s).

Parameters:

vmUuuid - The UUID of the VM in the CACTOS infrastructure model.

from - Start time of the time interval for which the behaviour is fetched. Must be greater or equal to zero.

to - End time of the time interval for which the behaviour is fetched. Must be greater than from.

Returns:

The behaviour, containing utilization values for CPU and HDD for the given interval.

getBehaviour

SimpleVMBehaviour getBehaviour(double from,
                               double to)

Get the behaviour of a VM with Specs stated in the instantiation of the Behaviour inference engine, assuming a simplified resource model. The behaviour is fetched for the interval [from,to). The times are specified in simulation time seconds relative to the starting point of the simulation (0s).

Parameters:

from - Start time of the time interval for which the behaviour is fetched. Must be greater or equal to zero.

to - End time of the time interval for which the behaviour is fetched. Must be greater than from.

Returns:

The behaviour, containing utilization values for CPU and HDD for the given interval.

getBehaviour

TreeMap<Double,IntervalBehaviourValues> getBehaviour(String vmUuid,
                                                     int numberCores,
                                                     int memory,
                                                     String hdType,
                                                     String appType)
                                              throws IOException

Get the behaviour of a VM with Specs stated in the instantiation of the Behaviour inference engine, assuming a simplified resource model. The behaviour is fetched for the whole expected time of the VM running. The times are specified in simulation time seconds relative to the starting point of the simulation (0s).

Parameters:

numberCores - is the number of cores in the VM

memory - is the size of the memory allocated to the VM

hdType - is the HD type, should evaluate to either "HDD" or "SSD"

appType - is the Application for which the model is needed. Should evaluate to either "Wiki", "MolPro", "Playgen" or "BlackBox"

Returns:

a TreeMap, containing utilization values for CPU and HDD for the whole life time of the simulation. The key is the when the interval ends, i.e., if the first entry in the map is 100:IntervalBehaviourValues, then the first phase ends after 100 simulated seconds. During this period, the average CPU and I/O is as in the value object. Notes: Reason to do this is that the start period and the end period if provided as originally suggested in the Interface can overlap with multiple phases and will probably make their interpretation very hard. This interface is valid for Molpro now. We need to discuss if this is how we would like to have it for the simulator.

Throws:

IOException