[LAD] jack disconnecting my app

[Paul Coccoli]

On 6/13/07, Conrad Berhörster <conrad.berhoerster at gmx.de> wrote:
> Hello all,
>
> i have written an jackified application for a customer. the main application
> play a couple of audiofiles (wav) with some effects and filters. Everything
> works fine so far.
>
> From time to time,  while loading some more files, jack disconnects my
> application. the loading process is a seperated thread. i use the thread
> implementation from wxWidgets, which uses pthreads.
> Neither my app nor jack crashed, they are running but my app tell my
> "zombified - calling shutdown handler"
>
> the output of jack is.
>
> ---------------  schnipp
>  bash-3.00#  /usr/local/bin/jackd --realtime -d alsa
> jackd 0.100.0
> Copyright 2001-2005 Paul Davis and others.
> jackd comes with ABSOLUTELY NO WARRANTY
> This is free software, and you are welcome to redistribute it
> under certain conditions; see the file COPYING for details
>
> JACK compiled with System V SHM support.
> loading driver ..
> creating alsa driver ... hw:0|hw:0|1024|2|48000|0|0|nomon|swmeter|-|32bit
> control device hw:0
> configuring for 48000Hz, period = 1024 frames, buffer = 2 periods
> nperiods = 2 for capture
> nperiods = 2 for playback
> **** alsa_pcm: xrun of at least 0.662 msecs
> **** alsa_pcm: xrun of at least 4.624 msecs
> **** alsa_pcm: xrun of at least 4.950 msecs
> **** alsa_pcm: xrun of at least 68.566 msecs
> **** alsa_pcm: xrun of at least 48.265 msecs
> **** alsa_pcm: xrun of at least 4.413 msecs
> **** alsa_pcm: xrun of at least 6.883 msecs
> **** alsa_pcm: xrun of at least 126.050 msecs
> **** alsa_pcm: xrun of at least 62.059 msecs
> **** alsa_pcm: xrun of at least 51.514 msecs
> **** alsa_pcm: xrun of at least 12.643 msecs
> subgraph starting at soundroom timed out (subgraph_wait_fd=9, status = 0,
> state = Running)
> -----------  schnipp
>
> the xruns only appear while load sounds.
>
> kernelversion is
> Linux soundroom 2.6.15.6 #7 SMP PREEMPT Fri Jun 16 22:18:26 GMT 2006 i686
> unknown unknown GNU/Linux
>
> more /proc/asound/cards
> 0 [Gina3G         ]: Echo_Echo3G - Gina3G
>                      Gina3G rev.0 (DSP56361) at 0xea000000 irq 50
> 1 [CK804          ]: NFORCE - NVidia CK804
>                      NVidia CK804 with ALC850 at 0xea105000, irq 217
> and i use the gina3G
>
> and now the questions;
>  - is there any way, to get more infos out off jack
>  - any way to keep the app connected or a hint to avoid the disconnection
>  - some days ago i testet the jack version 0.103, but jack uses 100% cpu
> without any app. just starting qjackctl showed that.
>
>
> thanks very much for some hints. c~
>
>
>
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>


How are you getting the loaded data from your file IO thread to your
jack thread?  Are you blocking the jack thread somehow?