[pulseaudio-tickets] [Bug 84585] Issue of CPU usage with HiFiBerry driver snd_soc_hifiberry_amp with Debian Wheezy kernel 3.12.28

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=84585

--- Comment #32 from Alessandro Ferri <alessandroferri_015 at fastwebnet.it> ---
I have downloaded and compiled the file by Alexander E. Patrakov. I attach the
report generated by the program. I'll do that when I compiled the file it gave
me the following error

"asoundlib.h: No such file or directory" 

I had to run the command: 
export LD_LIBRARY_PATH = / usr / local / lib 
in order to compile the test file.



(In reply to Raymond from comment #30)
> http://mailman.alsa-project.org/pipermail/alsa-devel/2014-September/081501.
> html
> 
> you can try Alexander's pcm_avail.c to find out whether you sound card can
> report DMA_RESIDUE_GRANULARITY_SEGMENT or DMA_RESIDUE_GRANULARITY_BURST ?

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