Do Virtual Machines response times (e.g. when running software through them) reflect response times on the actual hardware systems they’re trying to emulate?
For example, assuming a more powerful processor than the machine being emulated (maybe a 2.4 GHz quad core i7 emulating a VM with substantially less horsepower – say a duel core Athlon), will the conversion of a video file to MP4 on the Athlon VM be reflective of the actual hardware response times of the Athlon? And therefore can benchmark times be compared using multiple VMs on the same machine? If so – how does one know if they’re running too many VMs on one machine at the same time, so that the host processor can’t accurately emulate the response times of each VM due to overload?