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RenCutypoison said: Lesser hardware performance are not the only problem, the native hypervisor + 3 OS is probably the cause of a (big ?) performance drop too. |
I forgot that too... virtualization always had some performance costs... you share the same physical hardware between two or more OSs... a good example in my projeto for better "costs" they resolved to make a virtualized pool of Oracle Database for some customers... so the same pysical machine have three OSs running Oracle Database Servers for different customers.
We faced a lot of performance issues that we never had when running only one OS + Oracle Database Server per physical machine... even when this virtualized machine is phusically close to five times stronger than the dedicated.
Even the Oracle documents says they didn't recomend use virtualized OSs for best performance.
EVerything had a cost... you lost in performance but it is cheaper to maintance and sustain... so the company decided to works to make the virtualized scenario works better even if they needed to upgrade the physical hardware.
