On Aug 9, 2007, at 9:56 PM, Mitch Gore wrote:
I tried using this DMA fix version and while its better I am still
getting errors. I was able to record a couple hours of video but
then when watching live TV it froze up.
Does recording from applications other than MythTV cause your system
to crash?
dd if=/dev/video0 of=bla.mpg
I have tried adjusting PCI latency with no luck. I am booting with
no apic and CPU speed is disabled. What else can i try?
Do you have any IRQ conflicts? Shuffling around your PCI cards can help.
cat /proc/interrupts
I believe this is a problem not with ivtv, but with MythTV: database
writes are done in the same thread as everything else, and for
whatever reason MythTV has too much to do, so it stops reading the
stream. Someone came up with a patch to spawn off separate threads
while recording, which, by and large, fixed these very errors for
many people. It's already in the MythTV SVN trunk, but you can apply
the patches yourself to 0.20-fixes (see the ticket's asyncdb.2.patch):
http://cvs.mythtv.org/trac/ticket/1660
Some preliminary googling revealed that database errors in MythTV can
cause this too, so do some mysqlcheck -r / myisamcheck -r whichever
your tables are.
- Rick
On 8/8/07, William Powers <[EMAIL PROTECTED]> wrote:
Mitch Gore wrote:
> <snip>
>
> This line grabbed my attention...
> Aug 7 23:16:36 mythtv kernel: ivtv0: All encoder MPEG stream
buffers
> are full. Dropping data.
> Aug 7 23:16:36 mythtv kernel: ivtv0: Cause: the application is not
> reading fast enough.e
>
> but how do i fix that?
>
> I hope I have provided enough information as to the system/issue.
> Please email if you need more info or have a fix! Ill be quick to
> respond.
>
> Thanks,
> Mitchell
I suggest searching through the list for a thread with this title:
"Please test: loads of fixes, include DMA timouts (hopefully)" and
try the version at the link there. That should be the latest &
greatest
version with all the recent fixes in it. Hopefully that will fix your
problem. If not, you could try searching the list or the FAQs. There
are other things you can try - disabling cpuspeed, adjusting PCI
latencies, , nosmap, noapic, etc., etc., etc.
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