Choppy Audio 2.1.3 on Ubuntu 10.04
  • Vote Up0Vote Down johngoughjohngough
    Posts: 113Member
    Hi folks, since upgrading to 2.1.3 on Ubuntu 10.4 LTS we've been getting occasional choppy audio from airtime. I've pasted some of the liquidsoap log below but it doesn't really tell me much about audio any issues although it is showing a data error of some sort. the log continues on like that for some time (full log attached). I've checked cpu process and bios power saver is off as per the instructions on the wiki and all seem fine. Can any body offer some advice please?

    Thanks
    John

    Version:1.0
    StartHTML:0000000167
    EndHTML:0000002024
    StartFragment:0000000454
    EndFragment:0000002008











    2012/08/03 15:17:59 [lang:3]
    /usr/lib/airtime/pypo/bin/liquidsoap_scripts/notify.sh --error='could
    not write data to host: Broken pipe in write()' --stream-id=1
    --time=1342798017.2 &


    2012/08/03 15:17:59 [DublinSouthFM:3]
    Closing connection...


    2012/08/03 15:17:59 [DublinSouthFM:3]
    Will try to reconnect in 5.00 seconds.


    2012/08/03 15:18:17 [DublinSouthFM:3]
    Connecting mount DublinSouthFM for source@localhost...


    2012/08/03 15:18:17 [DublinSouthFM:3]
    Connection setup was successful.


    2012/08/03 15:18:17 [lang:3]
    /usr/lib/airtime/pypo/bin/liquidsoap_scripts/notify.sh --connect
    --stream-id=1 --time=1342798017.2 &


    2012/08/03 15:18:36 [DublinSouthFM:2]
    Error while sending data: could not write data to host: Broken pipe
    in write()!


    2012/08/03 15:18:36 [lang:3]
    /usr/lib/airtime/pypo/bin/liquidsoap_scripts/notify.sh --error='could
    not write data to host: Broken pipe in write()' --stream-id=1
    --time=1342798017.2 &


    2012/08/03 15:18:36 [DublinSouthFM:3]
    Closing connection...


    2012/08/03 15:18:36 [DublinSouthFM:3]
    Will try to reconnect in 5.00 seconds.


    2012/08/03 15:18:54 [DublinSouthFM:3]
    Connecting mount DublinSouthFM for source@localhost...




    iaintext.odt
    503K
  • 8 Comments sorted by
  • Vote Up0Vote Down Martin KonecnyMartin Konecny
    Posts: 1,860Member
    Can you repost the attachment as a txt file (not a document).

    From what I can see in the plain-text of your post, it looks like audio shouldn't be working at all. The playout engine Liquidsoap cann't connect to your Icecast streaming server.

    How many streams do you have setup in the Stream Settings page?
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  • Vote Up0Vote Down johngoughjohngough
    Posts: 113Member
    Hi Martin txt file attached. In the gui all seems normal it says that its connected. It does connect as I'm listening now from the stream. Its the audio to also that gets choppy.

    I only have one stream on this setup.

    Any thoughts?
    airtime_log.txt
    8M
  • Vote Up0Vote Down Martin KonecnyMartin Konecny
    Posts: 1,860Member
    Ok,

    I do see some areas where Liquidsoap appears to be struggling:

    2012/08/08 12:21:59 [clock.wallclock_main:2] We must catchup 1.61 seconds! 
    2012/08/08 12:22:00 [clock.wallclock_main:2] We must catchup 3.16 seconds! 

    What processor do you have (for example is this an Intel Atom processor? - You can run airtime-check-system to find this information). 
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  • Vote Up0Vote Down Martin KonecnyMartin Konecny
    Posts: 1,860Member
    Also, when your audio is skipping please run "top" from the terminal, and report which processes are using the highest CPU percentage.
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  • Vote Up0Vote Down johngoughjohngough
    Posts: 113Member
    Hi Martin screenshots are below. Top is telling me Xorg is pretty intense but its mostly liquidsoap at 50% is that normal?

    Processor is an intel pentium, 2gb ram

    image



    image
  • Vote Up0Vote Down Martin KonecnyMartin Konecny
    Posts: 1,860Member
    On my machine Liquidsoap uses about 10% CPU, so this does not seem normal. Especially since your processor model seems very recent.

    Has this problem started happening recently (within the last week or so)? We just pushed out a new Liquidsoap package a few days ago for the 1.0.1 release.  
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  • Vote Up0Vote Down johngoughjohngough
    Posts: 113Member
    I think it always been quite high maybe 30- 40% but since upgrading to 2.1.3 its gone up and glitching/ choppy audio has occurred.
  • Vote Up0Vote Down Martin KonecnyMartin Konecny
    Posts: 1,860Member
    Ok I will do some tests to try and verify this. Please post the the file at /etc/airtime/liquidsoap.cfg
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