[mythtv-users] waiting for a thread/backend hang

[Christopher N. Deckard]

I'm trying to get MythTV stable on some Athlon64 hardware under Debian 
"unstable" (quoted as I'm using the unreleased pure64 tree from 
alioth.debian.org).  I've also rebuilt the MythTV Debian source packages 
for amd64.  MythTV runs fine, and I can schedule things and it will 
record the programs as expected.  However, there seems to be some kind 
of weirdness going on, and I haven't been able to pinpoint it.

I am getting a lot (on the order of 20/second) of messages in my mythtv 
backend log stating "waiting for a thread".  The time I really notice 
this is when a program has started to record, and I use the MythWeb 
interface for verifying that it has started to record.  The MythWeb 
pages take a very long time (sometimes a minute) to come up.  Bandwidth 
is not the issue as this is on my home network, and the backend, 
storage, and apache server are all running on the same machine.

The other thing I notice is that many times the preview image of the 
recorded program does not show up.  If I restart mythbackend, everything 
comes back and is responsive, but making the preview images still seems 
to either take forever or is broken.

When the backend gets into its "waiting for a thread" mode, scheduled to 
record programs do not get recorded.

Any pointers on fixing this or investigating this problem would be 
great.  I haven't seen anyone else mention this on the mailing list, and 
there are very few results in a google search.  Could this be an 
Athlon64 problem?

-Chris