This isn't about performing a syscall to get the time, this is about the kernel handling a syscall and in the process checking the time too many times. And get

This isn't about performing a syscall to get the time, this is about the kernel handling a syscall and in the process checking the time too many times. And getting the time without a full syscall is hardly unique to Windows. On Linux, that's almost the entire point of the vDSO.