> 2007/9/16, Hans Verkuil <[EMAIL PROTECTED]>:
>> On Friday 14 September 2007 19:32:40 Ma Begaj wrote:
>> > Hi,
>> >
>> > I have pvr150 and I am using ivtv from the kernel (2.6.22.1) at the
>> > moment. The problem is that I received pretty often this (but I saw
>> > no problems in my recordings ... I think):
>> >
>> > Sep 9 17:10:53 jingle kernel: ivtv0: All encoder MPEG stream buffers
>> > are full. Dropping data.
>> > Sep 9 17:10:53 jingle kernel: ivtv0: Cause: the application is not
>> > reading fast enough.
>> >
>> >
>> > or this (much more often):
>> >
>> > Sep 11 19:53:05 jingle kernel: ivtv0: DMA TIMEOUT 00000001 0
>> > Sep 11 19:53:45 jingle last message repeated 4 times
>> > Sep 11 19:54:53 jingle last message repeated 7 times
>> > Sep 11 19:56:02 jingle last message repeated 7 times
>> >
>> > and my computer becomes unresponsive after some time (X, ssh, etc).
>> > only reset "helps".
>> > these are the last lines from syslog (before reboot), which brings me
>> > to the conclusion that ivtv locks down my box.
>> >
>> > I just compiled 2.6.22.6 but I saw the first message right after
>> > reboot: [EMAIL PROTECTED]/packages# dmesg | grep Dropping
>> > ivtv0: All encoder VBI stream buffers are full. Dropping data.
>> > ivtv0: All encoder VBI stream buffers are full. Dropping data.
>> > ivtv0: All encoder MPEG stream buffers are full. Dropping data.
>> > ivtv0: All encoder MPEG stream buffers are full. Dropping data.
>> > ivtv0: All encoder VBI stream buffers are full. Dropping data.
>> >
>> >
>> > it is probably same ivtv version in this kernel as in 2.6.22.1 ??
>> >
>> >
>> > should I use ivtv from ivtvdriver.org instead of kernel version? I
>> > saw a few discussions on the list about DMA TIMEOUT, but I am not
>> > sure whether this was solved?
>> >
>> > I am asking this because the ivtvdriver homepage says:
>> > ---------------
>> > This release does NOT contain the ivtv driver proper, as that is now
>> > part of kernel 2.6.22. It does contain test tools, utilities and the
>> > ivtv-fb and saa717x drivers.
>> > ---------------
>> >
>> > that means that ivtv is not in the downloaded file? so I should
>> > expect no changes after compiling it?
>>
>> I would recommend upgrading to the v4l-dvb repository from
>> www.linuxtv.org. The DMA issues should be fixed in that repository.
>>
>> Messages like "all stream buffers full" mean that the application
>> reading from the device isn't reading fast enough. There have been
>> problems with MythTV and ivtv that are solved in the MythTV subversion
>> repository, if that's the app you are using.
>
> Hi Hans,
>
> This is an older topic, but I wanted to send an update, it could be
> useful for other users. I was not able to rid off these messages with
> the latest MythTv from SVN.
>> > ivtv0: All encoder VBI stream buffers are full. Dropping data.
>> > ivtv0: All encoder MPEG stream buffers are full. Dropping data.
>
> A guy on the MythTv list told me to try this:
> options ivtv tuner=55 enc_mpg_buffers=16 enc_vbi_buffers=8
>
> I did not receive any errors since then (2 days long).
>
> Can these options some negatively affect my recordings?
No, it just means the driver uses more memory. But setting enc_mpg_buffers
to 16 means that the driver can buffer up to 16 seconds of video and it
suggests that MythTV is doing other stuff besides reading from the video
device for a very long time.
Regards,
Hans
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