I'm also in the pulse-rt group, and have disabled all the multicast and
discovery options on my running pulseaudio. When in use, pulseaudio
(and in this case last-exit, or last.fm) trade places taking up between
2 and 15% each on my 3ghz P4-HT system. I don't have either
cpufrequency or powernowd support enabled (not supported).
pulseaudio is also taking a fairly large chunk of memory.
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
1527 mjohanss 9 -11 57744 7580 4416 S 12 0.2 39:14.48 pulseaudio
I've also experienced this level of usage while padevchooser and gnome-
volume-manager were disabled (not running). I don't have any open flash
applications, and from padevchooser (before closing it) I confirmed
that last-exit was the only application with a Play stream.
--
pulseaudio uses too much CPU
https://bugs.launchpad.net/bugs/207135
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