PulseAudio 100% cpu usage under KDE

[Bernard Mentink]

Hi Matt,

Thanks for the update. Pulseaudio has been the bane of many people for a
longtime .... seems it would be best without it if possible.

Is there anyway to get the Gnome sound setting UI (for example) to use OSS
instead of pulse?  .... or maybe some shim layer between pulse API calls
and OSS ... (not ideal I know)

Actually, I don't even know if the sound system is OSS in DFly, I know it
is in FreeBSD .... documentation is a bit missing on the sound side I am
afraid.

Matt, very impressed with the speed/responsiveness of the kernel and Hammer
..... awesome work ...

Konstantin:

First comand returns:
 DFly% pkg query -i "%n - %Ok: %Ov" | grep -i pulse
alsa-plugins - PULSEAUDIO: off
chromium - PULSEAUDIO: off
espeak - PULSEAUDIO: off
ffmpeg - PULSEAUDIO: off
freerdp - PULSEAUDIO: off
gtk-vnc - PULSEAUDIO: on
libao - PULSEAUDIO: off
libcanberra-gtk3 - PULSEAUDIO: off
ptlib - PULSEAUDIO: off
pulseaudio - ALSA: off
pulseaudio - AVAHI: on
pulseaudio - BASH: off
pulseaudio - GCONF: off
pulseaudio - JACK: off
pulseaudio - SIMD: on
pulseaudio - ZSH: off
sdl - PULSEAUDIO: off
speech-dispatcher - PULSEAUDIO: off
spice-gtk - PULSEAUDIO: off


Second Command:

pulseaudio-8.0: gnome-settings-daemon-3.18.2_2
pulseaudio-8.0: gnome-shell-3.18.4_2
pulseaudio-8.0: gtk-vnc-0.5.4_1
pulseaudio-8.0: empathy-3.12.11_1


Cheers,
Bernie

On Thu, Jun 30, 2016 at 5:38 AM, Matthew Dillon <dillon at backplane.com>
wrote:

> We haven't had any luck making our sound driver ioctls 100% compatible
> with linux.  The linux code is totally undocumented so its hard to figure
> out some of the buffering counters (used for sound synchronization with
> video mainly) are supposed to work.  I can make it not eat 100% cpu in
> chrome and firefox, but other use cases seem to blow up and I don't know
> why.
>
> -Matt
>
> On Wed, Jun 29, 2016 at 1:45 AM, Bernard Mentink <bmentink at gmail.com>
> wrote:
>
>> Hi,
>>
>> Thanks for that. Actually, I want to use Gnome rather than KDE.
>>
>> I am finding that with Gnome I can have sound from Chromium/Youtube  etc,
>> but when I call up the Gnome sound-settings tool, then pulseaudio get's
>> launched and used 100% cpu and crashes Gnome eventually ...
>>
>> Can I re-compile some lib in Gnome that does away with pulse?
>>
>> Cheers
>>
>> On Wed, Jun 29, 2016 at 7:20 PM, Konstantin Kulikov <
>> k.kulikov at naukanet.ru> wrote:
>>
>>> Hey.
>>> Can't say why pulseaudio doesn't work, but IIRC you can rebuild kdelibs
>>> without pulseaudio support and use other audio backend like vlc/gstreamer.
>>> Hope this helps.
>>>
>>> On Tue, Jun 28, 2016 at 10:26 PM Bernard Mentink <bmentink at gmail.com>
>>> wrote:
>>>
>>>> I also notice this bug report from 6 months ago, is it related?
>>>> http://bugs.dragonflybsd.org/issues/2881
>>>>
>>>> Cheers,
>>>> Bernie
>>>>
>>>> On Mon, Jun 27, 2016 at 12:36 PM, Bernard Mentink <bmentink at gmail.com>
>>>> wrote:
>>>>
>>>>> HI all,
>>>>>
>>>>> I thought I would open a separate thread on this issue.
>>>>>
>>>>> When I load the* snd_hda* module  and play some sound, the pulseaudio
>>>>> process uses 100% of one CPU core (I have 4), however the sound is fine.
>>>>> Even no playing anything, pulse is stuck at 100%
>>>>>
>>>>> Is there anyway to get pulse to work correctly?
>>>>>
>>>>> My hardware is an HP Desktop and sysctl reports the audio device as:
>>>>>
>>>>> pcm0: <Realtek ALC662 (Analog 2.0+HP/2.0)> at nid 20,27 and 24,25,26
>>>>> on hdaa0
>>>>> pcm1: <ATI R6xx (HDMI)> at nid 3 on hdaa1
>>>>> pcm0: <ATI R6xx (HDMI)> at nid 3 on hdaa0
>>>>>
>>>>>
>>>>> As far as I can tell, the Realtek device support s 44.1K,48K and 96K
>>>>> sampling, so down-sampling should not be an issue.
>>>>>
>>>>> All KDE sees is the "pulse" device with VLC backend.
>>>>>
>>>>> Thanks,
>>>>> Bernie
>>>>>
>>>>> PS: Other users have had the same issue ....
>>>>>
>>>>>
>>>>> --
>>>>>
>>>>> -------------------------------------------------------------------------------------------------------------------------------------
>>>>> Life is a sexually transmitted disease with a 100% mortality rate.
>>>>>
>>>>> -------------------------------------------------------------------------------------------------------------------------------------
>>>>>
>>>>
>>>>
>>>>
>>>> --
>>>>
>>>> -------------------------------------------------------------------------------------------------------------------------------------
>>>> Life is a sexually transmitted disease with a 100% mortality rate.
>>>>
>>>> -------------------------------------------------------------------------------------------------------------------------------------
>>>>
>>>
>>
>>
>> --
>>
>> -------------------------------------------------------------------------------------------------------------------------------------
>> Life is a sexually transmitted disease with a 100% mortality rate.
>>
>> -------------------------------------------------------------------------------------------------------------------------------------
>>
>
>


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