11 Jul
2007
11 Jul
'07
5:34 p.m.
On 7/11/07, Darren Gibbs <tsquank(a)yahoo.com> wrote:
We're doing an ARM-based embedded device, which
right now is running
vanilla 2.6.20. For the sake of simplicity we wrote an OSS driver
that's simply double-buffering and writing to the DAC via I2S. We
have a buffer underrun problem that is directly proportional to CPU
load... no glitches when simply cat-ing a file to /dev/dsp, but lots
of glitches when other things are happening on the system. Can
anyone suggest tools/techniques/patches for improving the situation?
Run the audio playback app with SCHED_FIFO priority.
Lee