[mythtv-users] Strange backend activity
tv at badmoon.com
Mon Mar 1 13:08:22 EST 2004
A little bit more information, I've been watching my backend today
trying to see when and where it starts eating up the CPU. I scheduled a
recording at 11:30, it was running fine eating up 2% of the cpu, until
the end of the recording, where a mythbackend process with a nice level
of 19 started to eat up 49-50% of the CPU, memory usage appears to be
static. Is this normal? Any idea what this process is doing? I've
scheduled another recording to begin at 12:30 to see what happens when
it tries to do that recording.
> -----Original Message-----
> From: mythtv-users-bounces at mythtv.org
> [mailto:mythtv-users-bounces at mythtv.org] On Behalf Of jose rubio
> Sent: Saturday, February 28, 2004 5:54 PM
> To: Discussion about mythtv
> Subject: Re: [mythtv-users] Strange backend activity
> On Sat, 2004-02-28 at 04:33, Adam Biskobing wrote:
> > Chaintech Motherboard
> > Athlon XP 2000 Processor
> > 256MB Memory
> > 80GB & 120GB IDE Discs
> > PVR-250
> > Gentoo Linux
> > Running CVS as of last week
> > The problem started with version .13, continued into .14
> and also into
> > the CVS. As I came down this morning, I notice that it had done it
> > again, The only entries in the backend log were:
> > 2004-02-28 08:45:02 Started recording "The Sting" on
> channel: 1526 on
> > cardid: 1,
> > sourceid 1
> > 2004-02-28 08:45:02 External channel change:
> > /usr/share/mythtv/channel/rca.pl 52 6 &
> > 2004-02-28 08:45:02 Changing from None to RecordingOnly
> > 2004-02-28 08:45:02 Using profile 'Default' to record
> > Starting up as the master server.
> > 2004-02-28 09:17:24 Probed: /dev/video0 - Composite 0
> > 2004-02-28 09:17:24 Probed: /dev/video0 - Composite 1
> > 2004-02-28 09:17:24 Probed: /dev/video0 - Composite 2
> > 2004-02-28 09:17:24 Probed: /dev/video0 - Composite 3
> > Any help would be greatly appreciated. I'm out of ideas,
> and this is
> > really cutting into the usability of myth.
> OK, just a shot in the dark here. I'm assuming you are
> running ivtv 0.1.9... But I don't think it's an ivtv problem
> if it is the backend running up the cpu.
> Looking at your log, I'm curious why you get the msg
> "Starting up as the master server" in the middle of the log
> when it should be at the begining. Unless you restarted the
> server between 8:45 and 9:17. (did
> If not I do not see why myth would be probing for input in
> the middle of recording.
> I did a grep -r "Probed" * in the myth source tree to see
> where that msg was coming from (I have never gotten that in
> my logs). It seems to be only when using v4l2. Do you have
> your kernel patched with v4l2 or did you just use the header
> in the ivtv/utils directory?
> This could be the diff, I am _not_ using v4l2, just the header...
> Anyway, if you did not restart the backend at about 9:00 then
> try compiling a new kernel without v4l2... I told you it was
> a shot in the dark...
> Well I hope I was of some help.
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