Well, 9.10 seems to have some major improvements in the kernel. I'm now
running ALSA again, and CPU usage is stable at around 20%. Still
excessive, but it's not spiking and causing dropouts all the time.
--
CPU usage spikes to 30% regularly during playback, no PulseAudio involved, just
ALSA
http
More investigation:
Ripped out ALSA, installed OSS4. CPU usage went down slightly, sound
quality improved.
Installed glib 2.18 from source, then installed mpd 0.15 from source,
turning off everything except MP3, MP4 and OSS. CPU usage went down a
bit more, glitching stopped even with the buffer s
Your behavior may be normal, drapsag, but there's no sample rate
conversion involved with my setup.
I ran oprofile to see what was chewing the CPU, and here are the top
entries from the log...
CPU: CPU with timer interrupt, speed 0 MHz (estimated)
Profiling through timer interrupt
samples %
After some research I see this is normal behaviour:
http://mpd.wikia.com/wiki/Tuning
--
CPU usage spikes to 30% regularly during playback, no PulseAudio involved, just
ALSA
https://bugs.launchpad.net/bugs/368121
You received this bug notification because you are a member of Ubuntu
Bugs, which i
same behaviour here, without alsa and pulse...
I use MPD for streaming to icecast. When I activate ogg streaming, cpu
peaks 40%, when I use mp3 cpu falls back to 19%. But that is far more
than previous version Ubuntu does.
Before I used 8.10 with a compiled version of mpd 0.14.1 and then cpu
hits
Did some more research. /etc/mpd.conf now reads
audio_output {
type "alsa"
format 44100:16:2
name "audio out"
period_time 5
auto_resample "no"
use_mmap "yes"
device "hw:0,0"
}
i.e. lock sample rate at native value bypass dmix according to
http://mpd.wikia.com/wiki/Tuning
This h
** Description changed:
Binary package hint: mpd
Opening another bug report for this, because none of the stuff in
#221951 applies.
I've got Ubuntu running headless on a 1GHz M1. It was fine with 8.04
and 8.10, but since upgrading to 9.04 MPD is chewing CPU. Every few
seconds
