[mythtv-users] livetv randomly stops playback

Tim Draper veehexx at zoho.com
Sun Sep 21 11:15:08 UTC 2014


---- On Fri, 19 Sep 2014 23:21:10 +0100 Jean-Yves Avenard<jyavenard at gmail.com> wrote ---- 


Hi

On Saturday, September 20, 2014, Tim Draper <veehexx at zoho.com> wrote:



---- On Sun, 14 Sep 2014 21:22:40 +0100 Tim Draper <veehexx at zoho.com> wrote ---- 


I've been having this issue ever since moving to 0.27.3 (BE and 1 FE currently running v0.27.3-159-g2d4a7c9, I was on 0.27.1 before .3 upgrade a month ago), and dont know what to check to figure out whats going on.

i have a split FE/BE system 1BE and 3FE's and the issue appears on at least 2FE's so doesn't appear to be a client side issue.

What basically happens is that after a while, the liveTV feed will simply freeze on screen and i have to exit and restart a livetv session (for lack of a better word) to get it working again. Recordings and Films seems unaffected with playback issues. TV Source also does not appear to be the cause (happens on both DVB-T and DVB-S2 inputs, i've been able to record programs that are 7 hours). When the screen freezes, seeking through the liveTV playback results in EXTREMELY slow seeking. 20-30seconds todo 1 back step and seeking back to when the livetv signal was good, results in the screen being frozen, or at best, a few frames every few seconds.

I updated my BE today, upto v0.27.3-159-g2d4a7c9, and also the latest TBS6981 drivers but with no improvement. It does not appear to be related to ringbuffer either, as the most recent freeze was outside of the EPG program start/stop times (8 minutes past the hour, after being in livetv for over an hour with 2 program changes)

I'm guessing logs will be helpful - where, what and how? :)




Just looked into this again, FE2 has the following log info.
http://pastebin.com/WwdB8ynw.
any thoughts as to what the problem could be?





Would have to show the backend log at the time. 
Start the backend with the extra arguments -v file


Se if test show any disk related issues 
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backend started at 11:23, and just had live tv fail on me (around 50mins livetv without issue)
this is the end of the on-screen log ('mythbackend -v') for the BE.

====     
2014-09-21 12:07:20.898664 I  Starting mythlogserver
2014-09-21 12:07:35.254513 W  TFW(/mnt/raid10/mythtv/livetv/9940_20140921105000.mpg:76): write(60160) cnt 339 total 19105876 -- took a long time, 17911 ms
2014-09-21 12:07:50.942920 I  Starting mythlogserver
2014-09-21 12:08:05.315404 W  RingBuf(/mnt/raid10/mythtv/livetv/9940_20140921105000.mpg): ReadPriv(..229376, normal) -- waited 10009 ms for avail(0) > count(229376)
2014-09-21 12:08:05.315421 E  RingBuf(/mnt/raid10/mythtv/livetv/9940_20140921105000.mpg): ReadPriv(..229376, normal) -- timed out waiting for data (10009 ms)
2014-09-21 12:08:09.072860 N  AutoExpire: CalcParams(): Max required Free Space: 3.0 GB w/freq: 14 min
2014-09-21 12:08:10.227917 W  TFW(/mnt/raid10/mythtv/livetv/9940_20140921105000.mpg:76): write(58092) cnt 609 total 33290288 -- took a long time, 30362 ms
2014-09-21 12:08:20.931219 I  Starting mythlogserver
2014-09-21 12:08:50.876009 I  Starting mythlogserver
====

nothing obvious in dmesg, and i'm reasonably confident the hardware is fine.
does the above BE log snippet help?

thanks
Tim


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