[Bug 109830] CPU iowait higher when run the GPU multi decoding threads

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109830

--- Comment #26 from Owen Zhang <owen.zhang at intel.com> ---
(In reply to Tvrtko Ursulin from comment #25)
> I can't build MediaSDK since the instruction don't work for me. This step:
> 
>   perl tools/builder/build_mfx.pl --cmake=intel64.make.release
> 
> There is no tools/builder/build_mfx.pl in my checkout. Neither master or the
> SHA referenced as tested by the build script.
> 
> P.S. My test machine is not accessible from the outside.

i change the reproduce steps, which should work in your side. 

1.      Get the UMD build from github:
https://github.com/Intel-Media-SDK/MediaSDK/releases/download/intel-mediasdk-18.4.1/MediaStack.tar.gz
2.      tar xzvf MediaStack.tar.gz
3.      cd MediaStack && sudo ./install_media.sh   # Install UMD
4.      Reboot
5.      tar xzvf reproduces.tar.gz
6.      cd reproduces
7.      ./make_clips.sh  # Generate multiple clips for testing
8.      cp /opt/intel/mediasdk/share/mfx/samples/_bin/x64/sample_decode .   #
Use the sample_decode from MediaStack
9.      ./decode_video_avc.sh

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