[mythtv-users] Overactive scheduler?

[Michael T. Dean]

On 02/10/2012 08:05 PM, Marco Quezada wrote:
>> On 02/10/2012 05:11 PM, Marco Quezada wrote:
>>> My backend has trouble reaching an idle timeout so it can shutdown on
>>> its own. Its logs are filled with entries like these:
>>>
>>>
>>> 2012-02-10 16:38:57.396 mythbackend: Running housekeeping thread
>>> 2012-02-10 16:39:28.000 MainServer::ANN Playback
>>> 2012-02-10 16:39:28.002 adding: QMHTPC-1 as a client (events: 0)
>>> 2012-02-10 16:39:28.005 MainServer::ANN Monitor
>>> 2012-02-10 16:39:28.016 adding: QMHTPC-1 as a client (events: 1)
>>> 2012-02-10 16:39:28.019 Reschedule requested for id -1.
>>> 2012-02-10 16:39:29.434 Scheduled 144 items in 1.4 = 0.02 match + 1.37 place
>>> 2012-02-10 16:39:29.441 scheduler: Scheduled items: Scheduled 144
>>> items in 1.4 = 0.02 match + 1.37 place
>>> 2012-02-10 16:40:07.397 AutoExpire: CalcParams(): Max required Free
>>> Space: 1.0 GB w/freq: 15 min
>>> 2012-02-10 16:42:51.110 MainServer::ANN Monitor
>>> 2012-02-10 16:42:51.111 adding: QMHTPC-1 as a client (events: 2)
>>> 2012-02-10 16:42:51.600 MainServer::ANN Monitor
>>> 2012-02-10 16:42:51.606 adding: QMHTPC-1 as a client (events: 2)
>>> 2012-02-10 16:45:02.602 MainServer::ANN Monitor
>>> 2012-02-10 16:45:02.606 adding: QMHTPC-1 as a client (events: 2)
>>> 2012-02-10 16:55:07.627 AutoExpire: CalcParams(): Max required Free
>>> Space: 1.0 GB w/freq: 15 min
>>>
>>> So I suspect that the scheduler is keeping it awake but I am not sure
>>> which settings I may have messed up. The information I have found
>>> online seems to indicate an issue with the EIT grabber but I am not
>>> using EIT, I am using Schedules Direct. I am using mythTV version
>>> "fixes/0.24 [v0.24-243-g9ba3ece]".
>>>
>>> I've reduced the idle timeout to 600 secs and the idle wait for
>>> recording time to 20 minutes but cannot seem to be able to get ahead
>>> of the scheduler or the housekeeping thread. The permissions for
>>> executing the shutdown script and setting the time on the RTC are
>>> correct, every once in a loooong while the machine seems to reach the
>>> idle timeout and it does shutdown, but it takes weeks some times.
>>>
>>> I've tried looking for information on the AutoExpire, Scheduled items
>>> and housekeeping messages to try to track them down but have not had
>>> much luck. Am I even on the correct track or might there be another
>>> issue?
>> You've explicitly disabled EIT on the Video Source using Schedules
>> Direct data (in mythtv-setup)?
> Yes, I have only one Video Source configured (Schedules Direct) with
> the "Perform EIT Scan" box unchecked, and I have both of my input
> connections (2 tuners on my HDHR) tied to this Video Source.

And don't have other Video Sources with EIT enabled (even if not 
connected), right?

Anyway, reschedules should occur:

a) any time someone runs mythfilldatabase
b) any time someone changes a recording rule
c) any time a recording starts or finishes
d) any time a recording is deleted
e) every 5 minutes for EIT users

You could see if EIT is involved by checking when these "overactive 
scheduler" runs occur.

> I did find this snippet in my backend log from earlier in the month
> when it was still set to look for an idle time of 840 seconds. It
> seems it really thought it would shut down but got interrupted:
>
> 2012-02-04 17:36:39.516 Seem to be woken up by USER
> 2012-02-04 17:36:44.610 mythbackend: Running housekeeping thread
> 2012-02-04 17:36:51.324 MainServer::ANN Playback
> 2012-02-04 17:36:51.333 adding: QMHTPC-1 as a client (events: 0)
> 2012-02-04 17:36:51.336 MainServer::ANN Monitor
> 2012-02-04 17:36:51.353 adding: QMHTPC-1 as a client (events: 1)
> 2012-02-04 17:36:59.528 I'm idle now... shutdown will occur in 840 seconds.
> 2012-02-04 17:37:54.610 AutoExpire: CalcParams(): Max required Free
> Space: 1.0 GB w/freq: 15 min
> 2012-02-04 17:38:50.360 MainServer::ANN Playback
> 2012-02-04 17:38:50.361 adding: QMHTPC-1 as a client (events: 0)
> 2012-02-04 17:38:50.364 MainServer::ANN Monitor
> 2012-02-04 17:38:50.365 adding: QMHTPC-1 as a client (events: 1)
> 2012-02-04 17:40:37.968 MainServer::ANN Playback
> 2012-02-04 17:40:37.970 adding: QMHTPC-1 as a client (events: 0)
> 2012-02-04 17:40:37.972 MainServer::ANN Playback
> 2012-02-04 17:40:37.973 adding: QMHTPC-1 as a client (events: 0)
> 2012-02-04 17:40:37.974 MainServer::ANN Monitor
> 2012-02-04 17:40:37.976 MainServer::ANN Monitor
>

FWIW, reports suggest that MythWelcome fails to allow shutdown.

http://code.mythtv.org/trac/ticket/10114
http://www.gossamer-threads.com/lists/mythtv/users/496118#496118

Mike