hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling
Class RandomScheduler

java.lang.Object
  hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.Scheduler
      hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.FirstFitScheduler
          hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.RandomScheduler

public class RandomScheduler
extends FirstFitScheduler

Provides a scheduler that uses the random PM iterator to traverse through the IaaS's running machines list. This ensures uniform use of the PMs on the long run. Other than the random PM selection this class utilizes the FirstFitScheduler's logic of VM placement and queue management.

Author:

"Gabor Kecskemeti, Laboratory of Parallel and Distributed Systems, MTA SZTAKI (c) 2015"

Nested Class Summary

Nested classes/interfaces inherited from class hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.Scheduler

Scheduler.QueueingEvent

Field Summary

Fields inherited from class hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.FirstFitScheduler

raBiggestNotSuitable, ras

Fields inherited from class hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.Scheduler

freeCapacity, parent, pmComparator, pmstateChanged, publicTQ, queue

Constructor Summary

RandomScheduler(IaaSService parent)
Passes the IaaSService further to its super class.

Method Summary

protected PMIterator

instantiateIterator() Returns with the Random PM iterator.

Methods inherited from class hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.FirstFitScheduler

getPMIterator, scheduleQueued

Methods inherited from class hu.mta.sztaki.lpds.cloud.simulator.iaas.vmscheduling.Scheduler

dropVMrequest, getQueuedVMs, getQueueLength, getTotalQueued, manageQueueRemoval, manageQueueRemoval, scheduleVMrequest, subscribeQueueingEvents, unsubscribeQueueingEvents

Methods inherited from class java.lang.Object

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

Constructor Detail

RandomScheduler

public RandomScheduler(IaaSService parent)

Passes the IaaSService further to its super class.

Parameters:

parent - the IaaS Service which this RandomScheduler operates on

Method Detail

instantiateIterator

protected PMIterator instantiateIterator()

Returns with the Random PM iterator.

Overrides:

instantiateIterator in class FirstFitScheduler

Returns:

the desired PM iterator to be used for traversing the PMs while doing the scheduling