Re: AW: Re: Xen 3.4 strange behaviour as compared to Xen 3.3.1

[Keir Fraser <keir.fraser@eu.citrix.com>]

Is lowest p-state lowest or highest frequency/voltage?

 -- Keir

On 29/05/2009 17:47, "Carsten Schiers" <carsten@schiers.de> wrote:

> Thanks Keir, I tried it out but there is no difference. And by the way:
> it
> is in lowest p-state and doesn't come up, even if under heavy load. Hmm.
> 
> BR,
> Carsten.
> 
> -----Ursprüngliche Nachricht-----
> Von: Keir Fraser [mailto:keir.fraser@eu.citrix.com]
> Gesendet: Freitag, 29. Mai 2009 17:02
> An: Carsten Schiers; xen-devel
> Betreff: Re: [Xen-devel] Xen 3.4 strange behaviour as compared to Xen
> 3.3.1
> 
> On 29/05/2009 15:03, "Carsten Schiers" <carsten@schiers.de> wrote:
> 
>>   - as already reported, ondemand manager in dom0-kernel doesn't step,
>> manual
>>     setting works so it seems a bit like the communication between
> dom0
>> and
>>     hypervisor regarding idle time is not working
> 
> Could be an interaction with C-state support, preferring deep sleep to
> running at lower voltage/frequency? You could try no-cpuidle on Xen's
> command line at boot time and see if that changes things.
> 
>  -- Keir
> 
>>   - all beside one domu use Xen 3.4.0 kernel, the one who uses it's
>> customized
>>     kernel won't start up as first domu. It simply hangs and this
>> prevents also
>>     all other domus (I all auto start them, no save/restore) don't
> come
>> up. When
>>     I start the chain with a different one and this (with the
> different
>> kernel)
>>     is started as #2 or #3, not problem
>> 
>>   - one domu is for vdr with three dvb pci cards passed trough. This
>> one, when
>>     started as the first one, will cause xentop to show 20% load. When
>> restarted
>>     or started as #2, the load is like with 3.3.1 at roughly 3-5%.
> 
> 
> 
>