Subject: Re: [ecasound] zombified, xruns while multi channel recording
From: Julian Dobson (juliand_AT_braverock.com)
Date: Sun Sep 07 2003 - 17:50:10 EEST
Hirendra,
I can't repeat your setup but from what you describe, it seems that lame
(of which there are 3 instances being used) isn't getting enough cpu
cycles - lame is pretty intensive when encoding, and the more
compression you are using, the more it needs - I run two lame sessions
concurrently, one encoding to 64kb/s, the other to 128kb/s, the 64
stream uses 40% cpu, the 128, 15%).
You might consider increasing the bit rate, even outputting as a raw
wave file and doing batch encoding afterwards.
As a test I would try this with a single channel, then with 2 and see at
what point you get the problem - top will also help.
Julian
Hirendra Hindocha wrote:
> Hello,
>
> I finally got RH9, Delta 1010LT, Jack, ALSA and Ecasound working
> together recording channels to individual files using -
>
> ecasound -f:32,1,44100 -z:db,1000000 -b:8192 -G:jack,ecasound,recv \
> -a:1 -i jack -o ch3.mp3 \
> -a:2 -i jack -o ch7.mp3 \
> -a:3 -i jack -o ch8.mp3
>
>
> but now I'm running into another problem -
> After recording for a few minutes, ecasound exits with the
> following -
>
> (audioio-mp3) Starting to encode ch3.mp3 with lame.
> (audioio-mp3) Starting to encode ch7.mp3 with lame.
> (audioio-mp3) Starting to encode ch8.mp3 with lame.
> zombified - calling shutdown handler
> - [ Controller/Batch processing finished ]
> ---------------------------------
> - [ Engine exiting ]
> -------------------------------------------------------
> (eca-controller) Disconnecting chainsetup:
> "command-line-setup".
> - [ Chainsetup disconnected ]
> ----------------------------------------------
> (audioio-jack-manager) Connection closed!
>
>
> and JACK outputs the following message -
>
> delay of 19678.000 usecs exceeds estimated spare time of
> 17969.000; restart ...
>
>
> **** alsa_pcm: xrun of at least 0.528 msecs
>
> client ecasound error: awake_at = 169502960894 state = 2
> timed_out = -1
>
>
>
> I'm running RH9 , Planet CCRMA's low latency RH9 patched kernel ,
> Alsa 0.9.4 CVS , Jack 0.8 , ecasound 2.3 , delta 1010LT and I
> currently have 3 audio sources attached to the delta card. I
> intend to increase the audio sources to 8 or 10 after I'm able to
> successfully record for 24 hours without any premature exits.
>
> I've tuned the HD , increased ecasound's buffer, run it as root .
> What else should I be doing ? Any suggestions ?
>
>
> Kai, thank you for a nifty program.
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