[mythtv-users] ivtv0 warning: ENC Stream 0 OVERFLOW

Endaf Jones jonese at zener.com
Mon Jan 9 01:43:40 UTC 2006


On 1/8/06, Al McIntosh <junkmail at allanmcintosh.com> wrote:
> chris at cpr.homelinux.net wrote:
>
> >On Sat, Jan 07, 2006 at 09:34:41AM -0500, Al McIntosh wrote:
> >
> >
> >>>>Dec 15 07:28:27 mythbox kernel: ivtv0 warning: ENC Stream 0  OVERFLOW
> >>>>#2:
> >>>>Stealing a Buf
> >>>>fer, 512 currently allocated
> >>>>
> >>>>
> >>More memory does not appear to help. Did anyone manage a fix for this?
> >>
> >>
> >
> >In my case, it turned out that my network card was on the same IRQ as
> >all three IDE channels (software RAID-5), and while the box would
> >usually record OK, if I was doing something network-intensive (like
> >watching TV on the remote Myth frontend) the network card would
> >generate so many IRQs it was delaying the drives to the point where
> >the front-end would stutter, ivtv would overflow, and eventually the
> >RAID driver would fail a drive.  That would have been fine, except
> >that the ethernet watchdog (tulip driver) would panic the kernel.  I
> >tried forcing the cards to specific IRQs but the tulip driver
> >wouldn't behave.  I switched to a different ethernet port and ALL of
> >the problems went away.
> >
>
>
> Interesting, I have a rather fast mythbox, AMD 2800+ with 1G ram and a
> single pvr250.  The buffer overflow often occurs in the middle of the
> night when the only load on the machine is mythbackend recording.

Perhaps when mythfilldatabase is running?

--
# Endaf


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