Re: [Xen-devel] [patch 14/33] xen: xen time implementation

Keir Fraser
2007-06-06T12:54:55Z

On 6/6/07 13:46, "Jan Beulich" <jbeulich@novell.com> wrote:

>> On the other hand some timing issues on throttling are probably
>> the smallest of the users' problems when it really happens.
>
> Not if this results in your box hanging - I think throttling is exactly
> intended
> to keep the box alive as long as possible (and I've seen throttling in action,
> with the box happily recovering from the situation - after having seen it a
> few times I checked and found the fan covered with dust).

Clamping to last returned timestamp value would be fine here. Time would go
moderately haywire for a while (lurch forwards and then stop for a while),
but wouldn't go backwards and should recover reasonably within the timescale
of the thermal event itself. I don't see an issue with just implementing
this clamping if it is needed.

-- Keir