Lab Experiment: Hypervisors : Is there really a performance difference between hypervisors from VMware, Microsoft and Citrix?


Is there really a performance difference between hypervisors from VMware, Microsoft and Citrix? We put them under a microscope and stress-tested them for days to find out the answer.


 


http://virtualizationreview.com/features/article.aspx?editorialsid=2641


 


There was no overall winner here; no way to say, “This is the best hypervisor for every situation.” But some general conclusions can be drawn. For CPU- and memory-intensive applications, XenServer and Hyper-V are attractive and have proven their mettle. For a large number of light to moderate workloads-or if you decide that memory over commit, for example, is important-ESX may be the answer. What is entirely clear, however, is that all three hypervisors are legitimate virtualization platforms, and that no single company has a monopoly on virtualization any longer.


 


 


Hyper-V cleaned VMware’s clock. The most expensive hypervisor is also the slowest.


 


We’re pleased to see Hyper-V won 4 of the 11 tests (the others going to XenServer by a less than a horse length). For example, test 2 focused on a large number of heavy workload systems: 1 database server running one midsize database and 12 VMs with a heavy workload of CPU, memory and disk operations. Key takeaways from this test:


 


·            Hyper-V completed SQLjob 52% faster than ESX.


·            Hyper-V is 2.3 times faster than VMware ESX in CPU for Virtualization Review’s hypervisor test operations.


·            Hyper-V is 3 times faster than VMware ESX in test for average RAM operations.


 

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