[ntp:questions] Timekeeping on Windows 2008r2 VM on Linux QEMU/KVM

detha detha at foad.co.za
Wed Jan 21 18:59:17 UTC 2015

On Wed, 21 Jan 2015 09:24:40 +0000, Sander Smeenk wrote:

> Hi,
> I seek your help in strange timekeeping issues on Windows 2008r2 VMs
> running on a Linux QEMU/KVM host. The clock drifts like a boat in a storm
> at high sea and NTPD is giving me very very strange results.

>From our internal wiki:

Timekeeping sucks in windows, more so in VMs. What seems to improve things
a bit in kvm/qemu VMs is adding the ffg to the machine definition:

  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>

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