'Twas brillig, and Mark Greenwood at 21/03/09 23:45 did gyre and gimble:
High CPU usage problem:
Machine one: Use paprefs to enable 'Enable network access to local
sound devices' 'Allow other machines on the LAN to discover local
sound devices' 'Don't require authentication'
Machine two: Use paprefs to enable 'Make discoverable network sound
devices available locally'
As before, start Amarok playing some music. Use pavucontrol to Move
Stream to the USB sound device on machine one (actually it doesn't
matter, any device on machine one will do. I don't even need the USB
device plugged in).
Audio starts playing out of machine one. CPU usage (run 'top') on
both machines rises and rises. Machine one is very low-powered and on
there the CPU usage reaches 99% and pulseaudio quits.
I thought I could replicate this earlier today, as pulse CPU did go very
high for a while with network sinks, and it fell away when I unticked
the boxes in paprefs. But I can't replicate now I try to sit down and
look at it :s
That said, one end of my loop is 0.9.10 so not sure how valid a test
this is. I'll try and upgrade the other side shortly.
This is the best thing about Linux when it works. I'm starting to
think I'm going mad; (I can't be the only one using the network
stuff, surely? Why has nobody else reported this?)
To be fair there are probably not a huge number of people using 0.9.14.
Quite a lot of distros stuck with 0.9.10 and are only shipping 0.9.14/15
in the next round of releases which are coming up now.
And of those using the newer versions, only a small subset will use
networking. So it's not surprising that you're the only one reporting
this... you're a pioneer! Be proud! :p
To debug further, it would be good to run pulseaudio manually on each
machine via -vvv args and see if anything is printed when the CPU goes
skyward.
Col
--
Colin Guthrie
gmane(at)colin.guthr.ie
http://colin.guthr.ie/
Day Job:
Tribalogic Limited [http://www.tribalogic.net/]
Open Source:
Mandriva Linux Contributor [http://www.mandriva.com/]
PulseAudio Hacker [http://www.pulseaudio.org/]
Trac Hacker [http://trac.edgewall.org/]
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