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

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

--- Comment #13 from Christian König deathsimple@vodafone.de --- (In reply to comment #10)

This is probably related to dpm and gpu clocks - if I run "vblank_mode=0 glxgears" in parallel with the benchmark the results are significantly better for me:

w/o gears:

MPEG DECODING (1920x1080): 13 frames/s MPEG DECODING (1280x720): 13 frames/s H264 DECODING (1920x1080): 12 frames/s H264 DECODING (1280x720): 13 frames/s

with gears:

MPEG DECODING (1920x1080): 77 frames/s MPEG DECODING (1280x720): 118 frames/s H264 DECODING (1920x1080): 51 frames/s H264 DECODING (1280x720): 92 frames/s

^^ very valuable comment, thx.

So do I get that right that generation 3D load affects UVD decoding performance here?