Public bug reported:
Binary package hint: pulseaudio
I'm using Ubuntu Studio 9.04 and have enabled PulseAudio
(0.9.14-0ubuntu20) with real time enabled. While playing music I
noticed that the audio output would suddenly stop, though Amarok kept on
as if everything was fine. I noticed that pulseaudio was no longer
running, when running it from the command line I observed again the same
behavior and the last output line from PulseAudio was "Killed". By
attaching strace with -e trace=signal I found that it would occasionally
get a SIGXCPU signal. On the 3rd signal, pulseaudio gets killed,
presumably by the Linux kernel.
I resolved this issue on my system by setting "no-cpu-limit = yes" in
the /etc/pulse/daemon.conf file. It seems by default the soft limit of
"Max cpu time" was set to 10ms (as reported from /proc/PID/limits),
which was getting exceeded. Since PulseAudio has been otherwise running
just fine, I think this rlimit setting is too conservative and should
probably be raised (not sure if this is possible via the daemon.conf).
One additional note is that I changed the resample-method to speex-
float-1 from the default of src-linear.
** Affects: pulseaudio (Ubuntu)
Importance: Undecided
Status: New
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PulseAudio gets killed by SIGXCPU
https://bugs.launchpad.net/bugs/367671
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