On Mon, Oct 25, 2010 at 10:36:54PM -0700, JD wrote: > On 10/25/2010 10:26 PM, Marcel J.E. Mol wrote: > > On Mon, Oct 25, 2010 at 09:45:03AM -0700, JD wrote: > >> On 10/25/2010 04:11 AM, Marko Vojinovic wrote: > >>> On Monday, October 25, 2010 04:39:53 JD wrote: > >>>> On 10/24/2010 08:28 PM, JD wrote: > >>>>> --- snip --- > >>>>> No matter what we think of flash, pulseaudio is not a product > >>>>> of the flash plugin. It is a free and opensource linux product. > >>>>> I just created output of strace of the pulseaudio process > >>>>> and posted it at > >>>>> http://pastebin.com/VbgCXwc3 > >>>>> It shows clearly that it is in a tight loop polling and finding > >>>>> nothing to process. As I had stated earlier, there is no youtube > >>>>> video playing at all. It seems once you play any browser based > >>>>> flash video, pulseaudio will continue to run even after you kill the > >>>>> tab where it was playing, and chew up 40% of cpu (at least, this > >>>>> is on my laptop with the old athlon64 3700+ unicore cpu). > >>>>> I do not know how much it consumes on much faster cpu's. > >>>>> > >>>>> Are there audio engineers on this list? > >>>>> Is this the way to handle an audio stream by an audio daemon? > >>>> I would like to add that this behavior is only evident when playing > >>>> a flash video via the browser. > >>>> But if I play a video via ffplayer, then after the end of the video, > >>>> pulseaudio goes back to consuming almost 0% of cpu. > >>>> So, is it possible that the flash plugin is not closing the audio > >>>> file descriptor, so pulseaudio keeps polling and finding nothing? > >>> Probably. Either way, the fact that there is a problem only after flash > >>> playback indicates that flash and/or the browser are at fault here, not > >>> pulseaudio. > >>> > >>> Best, :-) > >>> Marko > >> Thanks Marko - > >> I will look into finding a way to ask > >> adobe about it, since it is their plugin. > >> > > To add to this, I have simialr problems with pulseaudio. Everytime I start > > my laptop and log in to KDE pulseaudio does not work properly. Playing > > mp3 just gives no sound (using mplayer). Playing movies on youtube or > > other sites gives no sound with the movie and the movie plays at very fast > > speed. > > > > But when I just do a 'killall pulseaudio' from a Konsole session everything > > suddenly starts to work. Automatiacally a new pulsseaduio process is started, > > mp3 plays fine and web video play smoothly with sound! > > > > Hope this may help. > > > > -Marcel > Before you kill pulseaudio, see what it is doing by > issuing the command > strace -p PIDofPulseaudioProcess | tee /tmp/pulseaudio.strace > > You will probably find that it is stuck in an infinite loop poling > a file descriptor and finding there is no data to read. > > If that is the case, your problem is still related to what I have > reported in this thread. When I start my laptop, and login to kde pulseaudio seems to run fine in blocked state apperantly wainting for something to do. When I then start to play an mp3 file pulseaudio starts looping. See attached pulseaudio_strace_loop.txt with a few seconds of traceoutput. Then I kill pulsaudio after which it is restarted. Playing the same file wokrs fine now. See pulseaudio_strace_ok.txt with again a few seconds of strace output. After that I logged out and verified from a tty session there was no pulseaudio process running anymore. Logging in to kde again gave me a looping pulseaudio directly from start... Killing pulseadaudio again gives me e new one running fine. Hope this helps a bit. -Marcel
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pulseaudio_strace_loop.txt.gz
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pulseaudio_strace_ok.txt.gz
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