[mythtv-users] All encoder MPG stream buffers are full. Dropping data.

[Chris Isip]

On Wed, Apr 9, 2008 at 8:34 PM, George Mari <george_mythusers at mari1938.org>
wrote:

> Kelly Shutt wrote:
> > BUMP... noone has any ideas on this one?  I'd rather not have to
> > downgrade, which I don't even think is possible.  Right now it's not
> > usable at all, due to the fact that it's loosing like 25% of the
> > recording per hour from these errors.
> >
> > Thanks,
> > Kelly Shutt
> >
> >
> > Kelly Shutt wrote:
> >> I've been getting "All encoder MPG stream buffers are full. Dropping
> >> data." for the last week or so and it's causing jitters in my
> >> recording.  My machine has been running mythtv fine for over a year now
> >> and started doing this after I updated to 2.6.24 kernel and the latest
> >> 0.21 mythtv release.  It worked fine with 2.6.23 kernel and 0.20
> >> release, but not the updates.  I have started running the database
> >> optimization script nightly, but that has not helped.  I have also
> added
> >> "options ivtv enc_mpg_buffers=16" to make sure it's using the maximum
> >> buffer size for the PVR-350 card, which did not help either.  I've been
> >> looking at load, etc. and don't see any issues there.  The machine is
> >> dedicated to MythTV only, so there's not really anything else running
> >> that could interfere.  I've even discontinued all my transcoding for
> the
> >> moment to eliminate that as a possible CPU hog.  Anyone have any other
> >> suggestions?
> >>
>
> PCI latency? http://www.mythtv.org/wiki/index.php/PCI_Latency
>
> Shared interrupts? What is the output of "cat /proc/interrupts", or the
> equivalent for your distro?
>
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The database optimizations script might be the culprit.  Have you checked
/var/log/messages to see when these errors happen to see if they coincide
with any database optimizations or backups?  I know that was the culprit in
my system.

Chris
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