Re: [Xen-devel] Latest unstable detects cpu speed incorrectly

["Mr. Teo En Ming (Zhang Enming)" <space.time.universe@xxxxxxxxx>]

I am also experiencing 1000 MHz in my Windows XP HVM domU.

Check out my video here:

http://www.youtube.com/watch?v=3mxuNRiMxDU

-- 
Mr. Teo En Ming (Zhang Enming) Dip(Mechatronics) BEng(Hons)(Mechanical
Engineering)
Alma Maters:
(1) Singapore Polytechnic
(2) National University of Singapore
Blog URL: http://teo-en-ming-aka-zhang-enming.blogspot.com
Email: space.time.universe@xxxxxxxxx
MSN: teoenming@xxxxxxxxxxx
Mobile Phone: +65-9648-9798
Street: Bedok Reservoir Road
Republic of Singapore



On Wed, Oct 28, 2009 at 12:12 AM, Valtteri Kiviniemi
<valtteri.kiviniemi@xxxxxxxxxxxx> wrote:
> Hi,
>
> I have to wait for that to occur again. There were no error messages,
> suddenly domU's with emulated TSC started to use a lot of CPU until they
> were so slow that they had to be destroyed. domU's with native tsc are
> working fine.
>
> Is there any way to track down the problem?
>
> - Valtteri Kiviniemi
>
> Keir Fraser kirjoitti:
>>
>> Haven't heard any other reports of that. Can you provide more details?
>>
>>  -- Keir
>>
>> On 27/10/2009 15:51, "Valtteri Kiviniemi"
>> <valtteri.kiviniemi@xxxxxxxxxxxx>
>> wrote:
>>
>>> Hi,
>>>
>>> Seems like that emulation is not quite working as it should be. domU's
>>> are using all the available cpu and then they crash. I did a fallback
>>> back to the old behaviour and the virtuals running with tsc_native=1 are
>>> working fine.
>>>
>>> - Valtteri Kiviniemi
>>>
>>> Valtteri Kiviniemi kirjoitti:
>>>>
>>>> Hi,
>>>>
>>>> Ok, good to know. Is it always at 1GHz or can it be adjusted? Is there
>>>> some other new features different from 3.4.1 that I should know?
>>>>
>>>>
>>>> - Valtteri Kiviniemi
>>>>
>>>> Keir Fraser kirjoitti:
>>>>>
>>>>> On 27/10/2009 15:22, "Valtteri Kiviniemi"
>>>>> <valtteri.kiviniemi@xxxxxxxxxxxx>
>>>>> wrote:
>>>>>
>>>>>> We are testing the latest xen-unstable and found an interesting bug.
>>>>>> dom0 detects cpu speed correctly but when booting domU it detects it
>>>>>> incorrectly:
>>>>>>
>>>>>> "Detected 1000.000 MHz processor."
>>>>>
>>>>> TSC is emulated at that speed. If you want old behaviour then add
>>>>> tsc_native=1
>>>>> to your domain config file.
>>>>>
>>>>>  -- Keir
>>>>>
>>>>>
>>>>>
>>>>> _______________________________________________
>>>>> Xen-devel mailing list
>>>>> Xen-devel@xxxxxxxxxxxxxxxxxxx
>>>>> http://lists.xensource.com/xen-devel
>>>
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>>
>>
>
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