<div dir="ltr"><div class="gmail_extra"><div class="gmail_quote">On Sun, Nov 17, 2013 at 6:04 PM, Dave Hill <span dir="ltr"><<a href="mailto:myth@davidrhill.com" target="_blank">myth@davidrhill.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">Hello,<br>
I'm running the Mythbuntu 12.04 with the latest 0.27-fixes. My backend is a dual-core phenom II w/4GB ram and the recordings are in their own 1.5TB partition with 100GB kept free. It has a HDPVR for recording from my STB. My frontend is a nvidia ION system with the recordings partition mounted over NFS (not sure if that is relevant). I generally do not have any problems with this setup other than this.<br>
<br>
I have been seeing this problem primarily when watching NFL football games on Sundays. It only happens if the recording is in progress. It doesn't seem to matter if I am watching 2 hours or 5 minutes or 30 seconds behind the current time. The picture freezes during playback and eventually exits with video frame buffering failure. When it happens, it continues to happen after I restart playback, perhaps with 2-10 minutes of playtime between freezes. Rebooting the frontend machine has worked most of the time, though in one instance, I needed to reboot the backend as well to clear it up.<br>
<br>
At the time of the failure, I see this in the mythfrontend log:<br>
<br>
Nov 17 17:54:48 dhliv mythfrontend.real: mythfrontend[6857]: I Decoder ringbuffe<br>
r.cpp:1098 (WaitForAvail) RingBuf(/storage/recordings/<u></u>2786_20131117212400.mpg):<br>
Waited 0.2 seconds for data #012#011#011#011to become available... 0 < 32768<br>
Nov 17 17:54:48 dhliv mythfrontend.real: mythfrontend[6857]: N CoreContext mythp<br>
layer.cpp:2130 (PrebufferEnoughFrames) Player(l): Waited 102ms for video buffers<br>
AAAAAAAAAAAAALff<br>
<br>
... then a bunch of similar messages with the "waited" time ticking up till it reaches 20 seconds:<br>
<br>
Nov 17 17:55:08 dhliv mythfrontend.real: mythfrontend[6857]: N CoreContext mythp<br>
layer.cpp:2130 (PrebufferEnoughFrames) Player(l): Waited 19932ms for video buffe<br>
rs AAAAAAAAAAAAALff<br>
Nov 17 17:55:08 dhliv mythfrontend.real: mythfrontend[6857]: E CoreContext mythp<br>
layer.cpp:2153 (PrebufferEnoughFrames) Player(l): Waited too long for decoder to<br>
fill video buffers. Exiting..<br>
Nov 17 17:55:08 dhliv mythfrontend.real: mythfrontend[6857]: I CoreContext tv_pl<br>
ay.cpp:2198 (HandleStateChange) TV: Attempting to change from WatchingRecording<br>
to None<br>
<br>
<br>
In the mythbackend log around the same time, I see this:<br>
<br>
Nov 17 17:52:14 davetv mythbackend: mythbackend[2199]: I ProcessRequest recorder<br>
s/recorderbase.cpp:457 (GetKeyframeDurations) RecBase[5](/dev/video5): GetKeyfra<br>
meDurations(308350,<u></u>9223372036854775807,#65) out of 2475<br>
Nov 17 17:52:43 davetv mythbackend: mythbackend[2199]: N Expire autoexpire.cpp:2<br>
64 (CalcParams) AutoExpire: CalcParams(): Max required Free Space: 82.0 GB w/fre<br>
q: 15 min<br>
Nov 17 17:54:30 davetv mythbackend: mythbackend[2199]: E ProcessRequest programinfo.cpp:2358 (GetPlaybackURL) ProgramInfo(2705_<u></u>20131028005900.mpg): GetPlaybackURL: '2705_20131028005900.mpg' should be local, but it can not be found.<br>
Nov 17 17:54:30 davetv mythbackend: mythbackend[2199]: I PreviewGeneratorQueue mythdbcon.cpp:409 (PurgeIdleConnections) New DB connection, total: 15<br>
Nov 17 17:55:43 davetv mythbackend: mythbackend[2199]: I ProcessRequest mainserver.cpp:1420 (HandleAnnounce) MainServer::ANN Playback<br>
Nov 17 17:55:43 davetv mythbackend: mythbackend[2199]: I ProcessRequest mainserver.cpp:1422 (HandleAnnounce) adding: dhliv as a client (events: 0)<br>
<br>
<br>
Watching 'top' during the failure on the backend, I see that it is showing 10-15% idle time, with 100% of one of the cores being used by mythcommflag.<br>
<br>
Does anyone else have similar problems? What other information should I gather to help diagnose it?<br><br></blockquote><div>It doesn't happen to me. I have no problems with watching in-progress recording from the HDPVR or HDHR.</div>
<div><br></div><div>The backend messages you excerpted are unremarkable.</div><div><br></div><div>Can you try not using NFS - let it communicate the file through the myth protocol - and see if that changes anything?</div>
<div><br></div><div>Jim</div></div></div></div>