questions about resource utilization

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艾可

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Dec 7, 2022, 2:02:33 PM12/7/22

to CloudSim Plus: Cloud Simulation Framework

hello everyone

I am a student that learning cloudsim plus. I learn from example code and I donot know how some values are calculated.

1. In “VmRelativeHostResourceUtilizationExample”, it use: “host.getRam().getPercentUtilization()*100” and “host.getBw().getPercentUtilization()*100)” to get total host RAM/bw utilization. I think the total host RAM/bw utilization is the sum of two vm’s RAM/bw utilizations, but the result always 100%, even I change the initialUtilizationPercent in UtilizationModelDynamic.

2. In “HostsCpuUsageExample”, a host have a core that MIPS=2000, a VM in this host have a core that MIPS=1000. A cloudlet run in this vm that the use UtilizationModelFull. I think the CPU Utilization mean is 1000/2000=50%, but the result show it is 25%, by call: “host.getCpuUtilizationStats().getMean()*100”