Re: [alsa-devel] Player Thread is not woken after period elapsed

On Mon, 5 Sep 2011 23:08:53 +0530 "Nallasellan, Singaravelan" singaravelan.nallasellan@intel.com wrote:

Hi,

When I tried to root cause a glitch in the audio playback, I found a weird behavior.

User thread which invokes the writei function which in turn invokes a kernel function which waits for the free buffer to write the audio data. This kernel function adds this thread to a wake(sleep) queue and calls a schedule_timeout (msecs_to_jiffies(10000)).

actually it doesn't... you must be on some really really old kernel or something.

Will you provide some hint on how to go about identifying the root cause?

https://lkml.org/lkml/2011/9/5/201