On 9/20/05, Mercury Morris <[EMAIL PROTECTED]> wrote: > On 9/19/05, Michael T. Dean <[EMAIL PROTECTED]> 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? > > > > > http://www.gossamer-threads.com/lists/mythtv/commits/150176 > > 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 > occurred.
Did you completely restart the backend mysql processes after doing this? Maybe even reboot to be sure? > > 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. Not likely unless you have no DMA on your hard drives or the data is traversing the network. My backend storage is not on my backend server. I never see problems like this but I don't record HD either. None the less that should be less than 5MB/S which even a non-DMA hard drive might keep up with... > > 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? Possibly. Cheers, Mark _______________________________________________ mythtv-users mailing list mythtv-users@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
