[mythtv-users] Charlie Rose via PVR-350
mercury.morris at gmail.com
Tue Sep 20 14:30:09 UTC 2005
On 9/19/05, Michael T. Dean <mtdean at thirdcontact.com> wrote:
> Could this be a problem with your system (instead of a problem with
> Myth) that others are seeing where running mythfilldatabase (or wget of
> any kind) while recording causes an IOBOUND situation that prevents
> information from being written properly and causes an A/V sync offset?
> In other words, does Charlie Rose happen to record around the time your
> mythfilldatabase runs?
Yes Mike ! In the mythbackend.log, there are IOBOUND entries that
correspond in time exactly! to the discontinuities in the Charlie Rose show.
But here's the thing: I had already suspected mythfilldatabase because
it had been running within the Charlie Rose hour. So, I changed the
window for mythfilldatabase to run outside of that hour - problem still
So, mythfilldatabase is not the cause, BUT the system is recording
Letterman (in HDTV) from an HD3000 card at the same time.
I guess that the simultaneous recordings are too much for the I/O
system to handle - a bit of a surprise to me.
But now, thanks to you pointing me to the logs, I can set up the
recording schedules so that only one recording takes place at a time.
(Of course, I feel that I should have looked in the logs without having
to be told to.)
One more observation, about a specific time: Last night's out-of-sync
break occurred at 36:19 into the Charlie Rose show. That's within the
first two minutes of Letterman. Maybe there is extra overhead at the start
of a recording?
Anyway, Thanks Mike, for the heads-up to look in the logs.
It's quite likely that I can avoid the problem, at least for the near-term.
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