Re: system time

Gildas
2007-09-27T10:00:26Z

2007/9/27, Farkas Levente <lfarkas-lWVWdrzSO4GHXe+LvDLADg@public.gmane.org>:
> Avi Kivity wrote:
> > Farkas Levente wrote:
> >> Avi Kivity wrote:
> >>
> >>> Haydn Solomon wrote:
> >>>
> >>>> I know I'm not crazy.. now my host and guest clocks are in sync. I'll
> >>>> leave the guest running for a while and see if it eventually goes
> >>>> ahead of host.
> >>>>
> >>>>
> >>> Please do this both with and without -no-kvm-irqchip. The code paths
> >>> are very different.
> >>>
> >> the simple question does all the guest must be the same system time as
> >> the host? and if it's not the case then it's a bug? or it can happened
> >> with reason?
> >>
> >
> > Difficult to say. I think that some drift is inevitable as the guest
> > and host will calibrate differently.
>
> in the current version or even in long term?
> this means it's better to run ntpd on all guests even if it's running on
> the host:-((

To be fair, this problem is not kvm related but also exists on other
solutions, such as vmware esx (check their knowledge base article
ID1420).

HTH,
Gildas