Re: [Qemu-devel] [PATCH 1/2] Add HPET emulation to qemu (v3)

Jamie Lokier
2008-10-17T15:49:40Z

Beth Kon wrote:
> Clock drift on Linux is in the range of .017% - .019%, loaded and unloaded. I
> haven't found a straightforward way to test on Windows and would appreciate
> any pointers to existing approaches.

Is there any reason why there should be any clock drift, when the
guest is using a non-PIT clock?

I'm probably being naive, but with 32-bit or 64-bit HPET counters
available to the guest, and accurate values from the CMOS clock
emulation, I don't see why drift would accumulate over the long term
relative to the host clock.

-- Jamie