From: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
To: Farkas Levente <lfarkas-lWVWdrzSO4GHXe+LvDLADg@public.gmane.org>
Cc: kvm-devel <kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org>
Subject: Re: system time
Date: Thu, 27 Sep 2007 12:45:21 +0200 [thread overview]
Message-ID: <46FB89C1.6000205@qumranet.com> (raw)
In-Reply-To: <46FB823F.5000300-lWVWdrzSO4GHXe+LvDLADg@public.gmane.org>
Farkas Levente wrote:
> Avi Kivity wrote:
>
>>> this means it's better to run ntpd on all guests even if it's running on
>>> the host:-((
>>>
>>>
>> I think there are issues with running ntp on the guest due to tsc being
>> very inaccurate on virtualized guests.
>>
>
> does this means itás not possible to run a guest with accurate time?
>
>
Time should be mostly accurate. Running ntpdate every hour or so should
make it even better. For exact timekeeping a paravirtualized device (or
a mainframe) is necessary.
--
Do not meddle in the internals of kernels, for they are subtle and quick to panic.
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next prev parent reply other threads:[~2007-09-27 10:45 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-26 13:20 system time Farkas Levente
[not found] ` <46FA5CB2.70206-lWVWdrzSO4GHXe+LvDLADg@public.gmane.org>
2007-09-26 13:40 ` Haydn Solomon
[not found] ` <b75785ba0709260640v5ef01ca7tff94ec7c8dad44cf-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-09-26 14:02 ` Haydn Solomon
[not found] ` <b75785ba0709260702rb69ab8bldaba9793332223e7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2007-09-27 9:42 ` Avi Kivity
[not found] ` <46FB7B0B.5050907-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-09-27 9:40 ` Farkas Levente
[not found] ` <46FB7AA6.5050708-lWVWdrzSO4GHXe+LvDLADg@public.gmane.org>
2007-09-27 9:55 ` Avi Kivity
[not found] ` <46FB7DFF.6020102-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-09-27 9:50 ` Farkas Levente
[not found] ` <46FB7CFB.7020607-lWVWdrzSO4GHXe+LvDLADg@public.gmane.org>
2007-09-27 10:00 ` Gildas
2007-09-27 10:07 ` Avi Kivity
[not found] ` <46FB80D8.7060308-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-09-27 10:13 ` Farkas Levente
[not found] ` <46FB823F.5000300-lWVWdrzSO4GHXe+LvDLADg@public.gmane.org>
2007-09-27 10:45 ` Avi Kivity [this message]
2007-09-27 18:26 ` Simon Gao
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