[mythtv] Frontend 20s delay before playback

[Thomas Börkel]

HI!

Sometimes, when starting playback on a remote frontend (playing over 
NFS) of a prerecorded show, there is a 20-30s delay before playing 
actually starts.

It's not exactly reproducable, it just happens on some show and when I 
try again on the same show, it works OK.

It only happens on the remote frontend, not on the backend.

I already checked the database and tried to repair table recordedmarkup. 
I can backup the db without problems.

There is absolutely no error message in the backend or frontend logs.

This is frontend log with verbose playback (note the delay after 
"Using..."):
2005-03-31 21:18:19 All Programs
2005-03-31 21:18:20 Connecting to backend server: 192.168.123.137:6543 
(try 1 of
  5)
2005-03-31 21:18:20 Using protocol version 13
2005-03-31 21:18:20 Using protocol version 13
2005-03-31 21:18:53 detectInterlace(Detect Scan, Detect Scan, 25, 576) 
->Interla
ced Scan
2005-03-31 21:18:53 Interlaced: Interlaced Scan  video_height: 576  fps: 25
2005-03-31 21:18:53 Estimated bitrate = 384000
2005-03-31 21:18:54 Position map filled from DB to: 14865
2005-03-31 21:18:54 SyncPositionMap prerecorded, from DB: 14866 entries


Backend log:
2005-03-31 21:18:20 MainServer::HandleAnnounce Playback
2005-03-31 21:18:20 adding: frontend as a client (events: 0)
2005-03-31 21:18:20 MainServer::HandleAnnounce Playback
2005-03-31 21:18:20 adding: frontend as a client (events: 1)


If there were a problem with the backend or network, I guess there 
should be the "Prebuffering pause" message in the frontend log. So it 
must be something with the frontend.

Info:
- Myth 0.16
- Fedora Core 2
- kernel 2.6.10-1.9_FC2
- NVidia 6629
- use video as timebase
- extra audio buffer
- kernel deint
- shows recorded with PVR-350
- ivtv 0.2.0rc3c

Any hints would be greatly appreciated.

Thanks!

Thomas