[Bug 692953] alsa modules are silent or noisy after several hours of use

[GStreamer (bugzilla.gnome.org)]

https://bugzilla.gnome.org/show_bug.cgi?id=692953
  GStreamer | gst-plugins-base | 1.0.9

--- Comment #100 from Robert Krakora <rob.krakora at messagenetsystems.com> 2013-09-03 14:11:31 UTC ---
(In reply to comment #99)
> For information, an strace on the elements of the failed pipeline shows nothing
> than things like:
> 
> ioctl(10, 0x400c4150, 0xb5bff1f4)       = 0
> poll([{fd=10, events=POLLOUT|POLLERR|POLLNVAL}], 1, 40) = 1 ([{fd=10,
> revents=POLLOUT}])
> ioctl(10, 0x400c4150, 0xb5bff1f4)       = 0
> poll([{fd=10, events=POLLOUT|POLLERR|POLLNVAL}], 1, 40) = 1 ([{fd=10,
> revents=POLLOUT}])
> 
> endlessly.
> 
> I can't see xruns since xrun information appears with GST_DEBUG=4 and with this
> log level it's difficult to run test during lmany hours.
> But we see in Comment #45 that when I have xruns, strace shows strange things
> like "-1 EAGAIN (Resource temporarily unavailable)" and there is nothing like
> that here.
> 
> There is a way to set loglevel for xruns but not for other things ?
Unfortunately, there is no way to set a loglevel for xruns without modifying
the alsasink source which is a distinct possibility if you feel so inclined. 
;-)

BTW, it would be interesting to see if a simple pipeline of jackaudiosrc !
jackaudiosink fails.

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