>>> On 24.11.16 at 13:51, <[email protected]> wrote:
> Jan Beulich wrote:
> 
>>>>> On 22.11.16 at 07:50, <[email protected]> wrote:
>>> i just installed our first Leap 42.2 DomU and as i wanted to adapt
>>> our usual scriptset i noticed, that the settings for independent
>>> wallclock seem to be missing.
>>> While the doc is stating that independent wallclock settings should
>>> apply for Leap 42.2, /proc/sys/xen is not showing the appropriate
>>> file.
>>> 
>>> /proc/sys/xen # ls
>>> balloon
>>> 
>>> Has something gone wrong during installation, or is the documentation
>>> faulty?
>> 
>> I don't think the pv-ops kernel has ever supported the concept of
>> independent wallclock as configurable behavior. If you observe any
>> misbehavior without it, please open a bug.
> 
> We started switching to independent wallclock when systemd was
> introduced - systemd kept complaining about the clock being adjusted or
> something like that.

Over time we had kernel problems in that area, so much would
depend on when exactly you found it necessary to switch. Also
I don't think your reply really demonstrates any observed
misbehavior with the pv-ops kernel, yet that's the only criteria
based upon which fixing that kernel or considering to re-introduce
that control would become possible routes forward.

>  After a lot of research, we switched to using
> independent_wallclock for all guests.  Afair, this was/is also the
> SUSE/Novell recommendation. 

Not as far as I know. As long as there are no bugs, running e.g. NTP
once in Dom0 would seem the more efficient model compared to
running it in every DomU. But of course I don't know who gave this
recommendation, and in which context that was.

Jan

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