On Tue, Oct 05, 2010 at 11:37:26AM +0200, Matteo Cypriani wrote: > Package: dma-migrate > Version: 0.0.2010.06.17-3 > Severity: important > > > dma-migrate never ends and eats all the CPU. Cron pops a new instance of > dma-migrate every 5 minutes, so after some time I have a lot of > dma-migrate processes and load average becomes really bad. > > If I killall dma-migrate, mails are delivered normally (but cron > will launch a new dma-migrate process 5 minutes later). > > dma has just been installed on this machine with the default config. > > Please let me know if I can do anything to help you to locate the > problem.
If this is a new installation, then you do not really need dma-migrate;
you may safely remove it from the cron job. However, it would really
be good to find out what causes this hang.
Can you do the following for me (as root), preferably while there is
a single dma-migrate process running?
1. Show me the output of "mount"
2. Show me the output of "lsof -n -p `pgrep dma_migrate`" if there is
only one dma-migrate process running, and of:
lsof -n -p `pgrep dma-migrate | xargs | sed -e 's/ / -p /g'`
if there is more than one
3. Run "strace -p `pgrep dma-migrate`" and see if it continuously
outputs lines; if not, tell me what syscall it is blocking on.
4. If strace is continuously outputting lines, show me the output of
strace -p `pgrep dma-migrate` | head -500
5. ls -l /var/spool/dma
6. dma -bp
Thanks in advance for your assistance, and apologies for bringing
your system to a crawl!
G'luck,
Peter
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