PulseAudio Saves Power

Post Syndicated from Lennart Poettering original http://0pointer.net/blog/projects/pa-and-power.html

#nocomments yes

D.
Jansen has put up a blog story
including some power saving results when
running PulseAudio on modern HDA drivers.
This shows off some work Pierre-Louis Bossart from Intel did on the HDA drivers
which now enables the timer-based scheduling code in PulseAudio I added quite
some time ago to come to its full potential. You can save half a Watt and
reduce wakeups while playing audio to 1 wakeup/s.

Previously there was little public profiling data available about the
benefits PA brings you for low-power devices. Thanks to Dennis’ data there’s now
public data available that hopefully explains why PA is the best choice for
low-power devices as well as desktops. Hopefully this cleans up some misconceptions.

Pierre-Louis, thanks for your work!

Update: Arun Raghavan has posted a follow-up to this.