[ardour-dev] [crash] export, RT and no luck with gdb

David dplist at free.fr
Tue Feb 10 16:39:39 PST 2004


Using yesterday's CVS tarball, I can't export my 45min/stereo session
while running with RT priority. ardour crashes a couple of seconds after
the export begins (the progress bar moves a bit), a short silent file is
created, and jackd reports :

jackd watchdog: timeout - killing jackd

With normal priority however, ardour keeps working and the export ends
as expected.

Unfortunately, I haven't been able to get a decent backtrace of the
crash, using the ardbg script, maybe because of gdb I don't know. Here
is what gdb said :

Cannot find user-level thread for LWP 27211: generic error
(gdb)  thread apply all bt
Cannot find new threads: generic error

After that, if that matters, I was unable to quit gdb normally, always
going back to its prompt. I had to kill it.

- Ardour/GTK 0.439.0 running with libardour 0.722.0
- configured with : --disable-ksi --disable-optimize
- jackd version 0.92.0 started as root :
  jackd -t 50000 -R -d alsa -d ice1712  -M -r 44100
- gcc/g++ 2.96
- gdb --version reports : GNU gdb Red Hat Linux (5.1.90CVS-5)

Sorry for not being very helpful with that report.

Thanks to all on #ardour.


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