[ecasound] Overruns are killing me.

Hello,

I've been plagued by overruns, I know it's probably linux device
driver issues, but wanted to see if anyone could possibly help me find
the heart of the issue:

When recording with:
ecasound -r -i alsahw,0,0 -z:db,300000 -z:intbuf -t:10800 -o x.wav

I get:
********************************************************************************
* ecasound v2.4.2 (C) 1997-2005 Kai Vehmanen and others
********************************************************************************
- [ Session created ] ----------------------------------------------------------
- [ Chainsetup created (cmdline) ] ---------------------------------------------
(eca-chainsetup-parser) (eca-chainsetup) Raised-priority mode enabled.
... (prio:50)
(eca-chainsetup-parser) Using double-buffer of 300000 sample frames.
(eca-chainsetup-parser) Enabling extra buffering on realtime devices.
(eca-chainsetup-parser) Set processing time to 10800.00.
- [ Connecting chainsetup ] ----------------------------------------------------
(eca-chainsetup) 'rt' buffering mode selected.
(eca-chainsetup) Audio object "alsahw", mode "read".
(audio-io) Format: s16_le, channels 2, srate 44100, interleaved.
(eca-chainsetup) Audio object
... "/mnt/aux/Tmp/new_wavs/x.wav",
... mode "read/write".
(audio-io) Format: s16_le, channels 2, srate 44100, interleaved.
- [ Chainsetup connected ] -----------------------------------------------------
(eca-control-objects) Connected chainsetup: "command-line-setup".
- [ Controller/Starting batch processing ] -------------------------------------
- [ Engine init - Driver start ] -----------------------------------------------
(eca-engine) Using realtime-scheduling (SCHED_FIFO).
(eca-engine) Prefilling i/o buffers.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6353.08 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6034.68 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6000.70 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6459.37 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6446.73 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6426.75 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6609.30 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6548.48 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6402.78 ms long.
(audioio-db-client) WARNING: Overrun in writing to
"/mnt/aux/Tmp/new_wavs/howard-stern-channel-100-stump-shower-shoes_2005-10-26.wav".
Trying to recover.
(audioio-db-server) wait_for_full failed
(audioio-db-client) Serious trouble with the disk-io subsystem! (output)
warning! playback overrun - samples lost! Break was at least 6512.77 ms long.
- [ Controller/Batch processing finished ] -------------------------------------
(eca-control-objects) Disconnecting chainsetup: "command-line-setup".
- [ Chainsetup disconnected ] --------------------------------------------------
WARNING! While reading from ALSA-pcm device C0D0, there were 10 overruns.
(audioio-db-client) There were total 10 xruns.

Now, this is _only_ for 2 hours, to straight wav. I have tried samples
of 500000 and it locks up my computer on exit (or 2.6 gig file,
whichever comes first). I need serious help here, obviously. Any ideas
of where I can start?

Thanks,
avuton

--
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