[mythtv-users] 5min jump takes long during time shift

[Michael T. Dean]

On 06/02/2009 05:18 PM, Thomas Börkel wrote:
> I have the problem, that a 5min jump forward takes sometimes up to 15s
> when watching a show while it is being recorded (for example 30 min
> behind real time).
>
> 20s jumps are no problem.
>
> Anyone knows, what that is?
>
> - seperate backend and frontend (diskless PXE)
> - gigabit ethernet
> - optimized mysql settings
> - backend: Athlon 64 X2 DualCore 3800+, 1 GB, kernel 2.6.25
> - frontend: Celeron 2.6 GHz, 512 MB, kernel 2.6.28
> - both systems running Gentoo
> - Myth 0.21 fixes
> - no NFS for recordings (backend is streaming)
> - no comm flagging during recording, but after recording
> - MPEG2 (DVB-S)
> - SDTV, displaying on full HD
> - no frame-perfect jump configured
>
> Thanks!

Almost definitely a broken seektable.  First run optimize_mythdb.pl, 
then rebuild the seektable for any still-affected recordings:

http://www.mythtv.org/wiki/Repairing_the_Seektable

Mike