[mythtv-users] Myth backend lockup

[Stuart Auchterlonie]

On 04/08/15 20:17, Tom Bishop wrote:
> 
> 
> On Tue, Aug 4, 2015 at 2:07 PM, Hika van den Hoven <hikavdh at gmail.com
> <mailto:hikavdh at gmail.com>> wrote:
> 
>     Hoi Gary,
> 
>     Tuesday, August 4, 2015, 8:58:18 PM, you wrote:
> 
>     > On Tue, Aug 4, 2015 at 6:43 PM, Tom Bishop <bishoptf at gmail.com <mailto:bishoptf at gmail.com>> wrote:
>     >> Trying to find some ideas of where to start
> 
>     > I do not recall any repeatably reports of lockups on 0.27, but
>     > timing can be everything, and timing in a vm is often different,
>     > which may expose some underlying problem.
> 
>     > I would try to attach to the backend process with gdb and
>     > "thread apply all bt" to see what is going on.
>     > _______________________________________________
> 
>     Is it a lockup or a crash? I know that in the past my mythbackend
>     service sometimes disappeared. Since then I have a cron job checking
>     every minute and restarting if needed. It hasn't happened in a long
>     time, but I keep it there.
> 
> 
> I still see the process running but you cannot connect to the database,
> if you try to bring up the mythweb etc, they timeout.  The logging just
> stops when it has the issue, like I said the linux VM is up and running
> and I can ssh to it etc.
> 

I'd suggest that the next time it gets in this state use gcore to
capture an application core. From that we might have half a chance
of finding the cause

Regards
Stuart