[Bug 71448] [UVD] qvdpautest is very slow on radeonsi (HD 7950)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=71448

--- Comment #27 from darkbasic <darkbasic at linuxsystems.it> ---
Power state high doesn't help.

qvdpautest + 3.14-rc0 + AUTO + KWIN OFF:

MPEG DECODING (1920x1080): 8 frames/s                                           
MPEG DECODING (1280x720): 9 frames/s                                            
H264 DECODING (1920x1080): 8 frames/s                                           
H264 DECODING (1280x720): 8 frames/s                                            
Profile unsupported.                                                            
MPEG4 DECODING (1920x1080): 8 frames/s

qvdpautest + 3.14-rc0 + HIGH + KWIN OFF: the same

qvdpautest + 3.14-rc0 + HIGH + KWIN ON + glxgears:

MPEG DECODING (1920x1080): 77 frames/s                                          
MPEG DECODING (1280x720): 117 frames/s                                          
H264 DECODING (1920x1080): 51 frames/s                                          
H264 DECODING (1280x720): 90 frames/s                                           
Profile unsupported.                                                            
MPEG4 DECODING (1920x1080): 71 frames/s

Fortunately I noticed a great improvement with 3.14: I don't have the huge lag
before the start of the benchmark and glxgears doesn't freeze anymore like in
http://www.youtube.com/watch?v=BDhB61U9S0A

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