Re: [Jack-Devel] Fwd: [andraudio] Google I/O: High performance audio talk

On Sun, May 19, 2013 8:06 pm, Stéphane Letz wrote:
>
>
> Début du message réexpédié :
>
>> De : "Patrick Shirkey" <[hidden]>
>> Objet : Rép : [andraudio] Google I/O: High performance audio talk
>> Date : 19 mai 2013 11:16:02 UTC+02:00
>> À : "A discussion list for Android audio developers"
>> <[hidden]>
>> Répondre à : A discussion list for Android audio developers
>> <[hidden]>
>>
>>
>> On Sun, May 19, 2013 5:59 pm, Felix Homann wrote:
>>> The video of the High performance audio talk is now available:
>>>
>>> http://www.youtube.com/watch?v=d3kfEeMZ65c&feature=youtube_gdata_player
>>
>>
>> That might be the most frustrating thing I have ever seen.
>>
>> systrace, mutexes, variable buffer sizes, ringbuffer....  OMFIngG!
>>
>>
>
> Well it seems they are making "some" progress: finally allowing SCHED_FIFO
> threads for the audio stack, understanding priority inversion issues, how
> to avoid them..etc…
>
> But I still understand that only their audio stack can create SCHED_FIFO
> threads for their own needs (so still don't see how a JACK like system
> that needs to create RT threads for clients could be ported then…) and
> they still speak about this crazy 5% CPU budget for all audio stuff….
>
> Hum.. iOS still have some huge advantage here.
>

At least we know who's responsible for cleaning up this mess now. It might
even be possible to get one or both of them to actively participate in
Linux Audio Development instead of just working within the Google
ecosystem.



--
Patrick Shirkey
Boost Hardware Ltd

1368959345.2873_0.ltw:2,a <54337.188.26.171.179.1368959332.squirrel at boosthardware dot com>