[mythtv-users] mythbackend at 100% cpu, autoexpire messages filling log

[Mike LaPlante]

Today for some reason mythbackend started filling the logs with 

2008-05-25 18:07:33.875 AutoExpire: CalcParams(): Max required Free Space: 20.0 GB w/freq: 15 min
2008-05-25 18:07:33.880 AutoExpire: CalcParams(): Max required Free Space: 20.0 GB w/freq: 15 min
2008-05-25 18:07:33.884 AutoExpire: CalcParams(): Max required Free Space: 20.0 GB w/freq: 15 min
2008-05-25 18:07:33.889 AutoExpire: CalcParams(): Max required Free Space: 20.0 GB w/freq: 15 min
2008-05-25 18:07:33.894 AutoExpire: CalcParams(): Max required Free Space: 20.0 GB w/freq: 15 min
2008-05-25 18:07:33.901 AutoExpire: CalcParams(): Max required Free Space: 20.0 GB w/freq: 15 min
2008-05-25 18:07:33.905 AutoExpire: CalcParams(): Max required Free Space: 20.0 GB w/freq: 15 min

About 30 or 40 a messages a second. Which causes CPU usage to shoot to 100% on the backend, and the load gets up close to 3. Of course this makes any TV watching on the frontend very painful, usually the frontend starts complaining that its lost connection to the backend. Which is actually still running but dog slow. This has happened twice today and both times restarting the backend fixes it for an hour or so. 


Given that the message mention hard drive space, of course that was the first thing I checked.

Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1              71G  5.9G   61G   9% /
/dev/sdb1             452G  283G  146G  67% /storage
tmpfs                 506M     0  506M   0% /dev/shm


Seems to be fine, well over the minimum 20gb free I have it set to. Any one have any suggestions? 

Thanks
Mike