[Openchrome-users] XvMC on cle266 working jumpy/high load suddenly

[Mario Emmenlauer]

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Hi,

Thomas Hellstr?m wrote:
> Xavier Bachelot wrote:
>> Mario Emmenlauer wrote:
>>> I used to have XvMC-accelerated video on CLE266 w/ around 5%
>>> cpu using Xorg 7 with Gentoo's x11-drm, xine -V xxmc and
>>> video.device.unichrome_cpu_save:1.
>>>
>>>     
>> This xine option is usefull only in some situations.
>> It should be enabled only when you don't have "EnableAGPDMA" in your 
>> xorg conf, which is the prefered option. Actually, unichrome_cpu_save 
>> should only be used with K8M800, which doesn't support the xorg option, 
>> iirc.
>>   
> Also, it is worth noting that the xine cpu save option is a horrible
> hack that requires that the kernel timer tick frequency is 1000Hz or
> above. Some distributions ship their kernels with a lower tick frequency
> in which case the cpu save option will fail.


Really good to know, because so many manuals around the web advertise
this option as 'the ultimate trick' :-/

Cheers,
  Mario

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