cloudsim

Cloudsim: return confusion

由 狂风中的少年 提交于 2020-07-10 10:29:34
问题 This function is my sample function. this function Sort a given list of VMs by descending order of CPU utilization. public static <T extends Vm> void sortByCpuUtilization(List<T> vmList) { Collections.sort(vmList, new Comparator<T>() { @Override public int compare(T a, T b) throws ClassCastException { Double aUtilization = a.getTotalUtilizationOfCpuMips(CloudSim.clock()); Double bUtilization = b.getTotalUtilizationOfCpuMips(CloudSim.clock()); return bUtilization.compareTo(aUtilization); } });

How can we specify the execution time for any virtual machine (vm) in cloudsim simulator

由 ☆樱花仙子☆ 提交于 2020-01-16 16:35:15
问题 if we have 50 cloudlets/tasks and 1 virtual machine (vm) how can we make vm to run for specific time in order to apply RR method and cloudelts are run in time slice or quantum 回答1: In fact, CloudletSchedulers in CloudSim don't implement the concept of time slice/quantum. If you need to assess Cloudlets' preemption process, you can check CloudSim Plus, it's a full-featured, state-of-the-art, completely re-engineered and actively maintained CloudSim fork. It provides an implementation of the

How to calculate the power consumption of a VM?

由 有些话、适合烂在心里 提交于 2019-12-29 09:37:15
问题 Respected researchers, i want to calculate the power consumed by the virtual machines of a physical server in a cloud datacenter. please help me i will be very thankful for this appreciation. 回答1: /** * The cost of each byte of bandwidth (bw) consumed. */ protected double costPerBw; /** * The total bandwidth (bw) cost for transferring the cloudlet by the * network, according to the {@link #cloudletFileSize}. */ protected double accumulatedBwCost; // Utilization /** * The utilization model

What kind of Criteria can be design to give priorties to cloudlet in cloudsim?

由 走远了吗. 提交于 2019-12-24 20:18:55
问题 I added randomly Boolean parameter among cloudlet attributes for giving preference below is the code what else can do? What parameters can be added more to cloudlet attributes for giving them priority. for(int i=0;i<cloudlets;i++){ Random r= new Random(); // for creating random length Random priortyObj =new Random(); // for creating booleon priorty cloudlet[i] = new Cloudlet(priorty_cloudlet.priortyObj.nextInt(2), i, length +r.nextInt(2000),pesNumber, fileSize, outputSize, utilizationModel,

Host how can we execute according to the cloudlets arrival time when there are multiple VMs

由 时光怂恿深爱的人放手 提交于 2019-12-24 18:31:38
问题 If we have 50 cloudlets,10 VMs and one Host how can we execute them according to the cloudlets arrival time, not to the VM orders in the host. note that I using cloudsim simulator 回答1: Cloudlets are scheduled on the base of arrival, not on the base of VMs. 1st cloudlet is bound to the first VM and second to 2nd VM and so on. If you want to bound cloudlet to specific VM use broker.bindCloudletToVm(cloudlet id, vm id) function. 来源： https://stackoverflow.com/questions/51732399/host-how-can-we

how the timeshared in cloudsim work in cloudsim?

由 て烟熏妆下的殇ゞ 提交于 2019-12-20 05:53:17
问题 how the timeshared in cloudsim work, there is no variable that represent a time slice or quantum, so how the concept of round robin is verified in cloudsim? If we have 50 cloudlets,10 VMs 回答1: In fact, the CloudletSchedulerTimeShared in CloudSim does not implement the concept of time slice/quantum . Consider we have a VM with 1 CPU (PE) of 1000 MIPS and 2 Cloudlets running inside it. CloudSim's CloudletSchedulerTimeShared provides an oversimplified implementation that allocates 500 MIPS for

Power Consumption of Virtual machine in CloudSim Plus (simulation tool)

由 て烟熏妆下的殇ゞ 提交于 2019-12-02 08:33:44
I'm working on Cloudsim Plus(simulation Tool) for a project work and I need to calculate the power consumption of each Virtual machine for implementing VM SELECTION ALGORITHM using MAXIMUM POWER REDUCTION POLICY. The below code is a small portion of large code, written by me in PowerExample.java which is already available in clousimPlus examples folder. I have created four Virtual machines, two host and eight cloudlets. Map<Double, Double> percent = v.getUtilizationHistory().getHistory(); System.out.println("Vm Id " + v.getId()); System.out.println("----------------------------------------");

how the timeshared in cloudsim work in cloudsim?

由 放肆的年华 提交于 2019-12-02 08:20:22
how the timeshared in cloudsim work, there is no variable that represent a time slice or quantum, so how the concept of round robin is verified in cloudsim? If we have 50 cloudlets,10 VMs In fact, the CloudletSchedulerTimeShared in CloudSim does not implement the concept of time slice/quantum . Consider we have a VM with 1 CPU (PE) of 1000 MIPS and 2 Cloudlets running inside it. CloudSim's CloudletSchedulerTimeShared provides an oversimplified implementation that allocates 500 MIPS for each Cloudlet, making them run at the same time on the same CPU. If the VM had only one Cloudlet with a
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