1. A method of operating a computing device, the method comprising: operating at least one physical processor to: implement a hypervisor, the hypervisor emulating an emulated processor having a time stamp counter; execute computer-executable instructions implementing a computer operating system executing on the emulated processor that performs an operation of computing a normalized reference time, wherein: operating at least one physical processor to execute computer-executable instructions implementing a computer operating system comprises performing the operation, the performing comprising: reading a timer value from the time stamp counter from the emulated processor; obtaining through an interface with the hypervisor a scale factor and an offset; and calculating the normalized reference time by applying the offset and the scale factor to the value obtained from the time stamp counter.