[mythtv-users] Current SVN DVB Choppiness

Ciaran ciaranj at gmail.com
Mon Oct 10 19:32:03 UTC 2005


GAh! complete madness, I can confirm that when I run mythfrontend as
non-daemonised, it is a *lot* better!! .. I've yet to try running
daemonised from the same console as when I run it non-daemonised...
Any ideas people ?
Please :)
- Ciaran

On 10/10/05, Ciaran <ciaranj at gmail.com> wrote:
> Bizarre! I'll have to test when I get home :)
> Cheers
>
> On 10/10/05, pschormeir at iiv.de <pschormeir at iiv.de> wrote:
> > Yes, service means daemonized. If I start mythbackend -v from a shell, it's running like a charm.
> > I'm using remote frontends connected to the backend over 100Mbit wire, but even if I try frontend/backend on the same machine I get
> > this problems.
> > The problem also appears only while watching DVB Tv, I have a PVR350 in an extra backend, which works perfectly.
> > The worst combination was 2 backends, one with the DVB (master) and the other with the PVR (slave) and an extra frontend only
> > machine.
> > As long as I start both backends daemonized, they are most likely breaking at the first attempt to switch a channel on the dvb
> > source. If I start them both from the shell, the are working without any problem.
> >
> > Fritz
> >
> > -----Ursprüngliche Nachricht-----
> > Von: mythtv-users-bounces at mythtv.org
> > [mailto:mythtv-users-bounces at mythtv.org]Im Auftrag von Ciaran
> > Gesendet: Montag, 10. Oktober 2005 14:28
> > An: Discussion about mythtv
> > Betreff: Re: [mythtv-users] Current SVN DVB Choppiness
> >
> >
> > Hmm, I guess by service, you mean as a daemonized process? , I'm also
> > running it as that.  But interestingly, my backend + frontend are on
> > the same machine, are yours on diferent machines thene ?
> > - ciaran
> >
> >
> > On 10/10/05, pschormeir at iiv.de <pschormeir at iiv.de> wrote:
> > > Yep, I have exactly the same problem here.
> > > Sound is perfect, but video looks like stop and go traffic.
> > > Also have the prebuffering pause messages.
> > >
> > > Backend : XP2500, 512MB, DVB Nova-CI-S
> > > Frontends : P4 2000, 256MB, ATI M7500 and XP3000+, 768MB, ATI 9600
> > > All machines running under gentoo with 2.6.12/13 kernel
> > >
> > > I have the feeling, that the effect is less if I do not run mythbackend as a service. I also have the feeling that the backend is
> > > more stable in terms of channel changing, if it is not running as service...
> > >
> > > Fritz
> > >
> > > -----Ursprüngliche Nachricht-----
> > > Von: mythtv-users-bounces at mythtv.org
> > > [mailto:mythtv-users-bounces at mythtv.org]Im Auftrag von Ciaran
> > > Gesendet: Montag, 10. Oktober 2005 13:20
> > > An: Discussion about mythtv
> > > Betreff: [mythtv-users] Current SVN DVB Choppiness
> > >
> > >
> > > Hi,
> > > Has anyone else/is anyone else currently experiencing periods of
> > > extreme choppiness with the current SVN builds when either watching
> > > live-tv or recorded shows ? [It should be noticed that audio is
> > > unaffected and continues perfectly, but the video is jerky]
> > >
> > > Also in the fronted logs, I see 'prebuffering pause', and
> > > 'prebuffering pause timed out 10 times' [or words to that effect]
> > >
> > > If I'm running 'top' in aremote terminal the CPU usage isn't going
> > > much beyond 17% and the memory usage is acceptable, I really, really
> > > cannot work out why its so choppy for me :(
> > > [This isn't a continuous problem, it'll last for maybe 2-3 minutes
> > > then go away, then come back in an hours time].
> > >
> > > I *think* it must be something the back-end is doing as it also occurs
> > > when watching DVDs on the box.  I assumed it was running out of CPU
> > > time but it doesn't appear that way, *however* the load averages are
> > > going remarkably high (~11) when I see this problem, so I assume
> > > something somewhere is waiting/sleeping poorly?
> > >
> > > I'm starting to get frustrated with my inability to track this down
> > > :(, combined with the fact that I can't get into 'watch recordings'
> > > when running mythfrontend normally (Unknown symbol, blah bla), but it
> > > works perfectly under GDB, gah!!! Any ideas, straws to clutch etc ?
> > >
> > > Cheers :)
> > > --
> > > - Ciaran
> > > (I now have far too many G-Mail invites available, anyone who wants
> > > one, gets one)
> > > _______________________________________________
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> > >
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> > >
> >
> >
> > --
> > - Ciaran
> > (I now have far too many G-Mail invites available, anyone who wants
> > one, gets one)
> > _______________________________________________
> > mythtv-users mailing list
> > mythtv-users at mythtv.org
> > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
> >
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> >
>
>
> --
> - Ciaran
> (I now have far too many G-Mail invites available, anyone who wants
> one, gets one)
>


--
- Ciaran
(I now have far too many G-Mail invites available, anyone who wants
one, gets one)


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