[mythtv-users] Tracing Instability

Brian J. Murrell brian at interlinx.bc.ca
Sat Aug 13 22:31:26 UTC 2011

On 08/13/2011 05:32 PM, Ken Smith wrote:
> Hi, I'm on the trail of some instability (random hanging) of my
> Mythbackend.

Welcome to the club.

> What I've noticed that even though the backend process
> appears to be running, at times recordings fail and frontends can't
> connect, mythweb fails.

Yep, that's the right symptoms.

> I've set up a script based on
> http://tweakingmythtv.wordpress.com/2011/01/11/mythbackend-deadlocks-and-auto-restart-script/
> to catch the problem and restart the backend.

Interesting.  The only problem with that script is that it might restart 
the backend while it's recording something (mine seems to only lock up 
when recordings are in progress) and no clients are needing to connect, 
needlessly interrupting a recording.

> mythtv-backend-0.24.1-275  (atrpm's build)
> mysql-5.0.77-4.el5_6.6
> 2.6.18-238.12.1.el5.centos.plus 64 bit

So, now we have one on Ubuntu (me) one on Gentoo (IIRC) (warpme) and one 
on CentOS.  It is an interesting data point that it's not isolated to a 
single distribution.

> Any suggestions as to what I should look at to narrow this down.

Well, you can start by searching the very recent archives for a long 
thread about this issue.


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