[vdr] Re: performance problems with vdr 1.2.x

[Christoph Gohle <christoph@gohle.org>]

Jean-Claude Repetto wrote:
> Christoph Gohle wrote:
>
> > Hi all,
> >
> > this is my first posting to this list and i hope this is the right 
> > forum for my question.
> >
> > I am running vdr 1.2.6 on a Pentium 133 machine with a single Siemens 
> > DVB-s rev1.3 and i have big difficulties with performance:
> >
> > As soon as the dvbdevice starts it's recieverthread (i.e. start of a 
> > recording, or still beining in transfermode after a recording) cpu 
> > usage goes up to 70 - 100% (when looking with top), which usually 
> > results in a broken recording and liveview because the transfer and 
> > recording threads cannot deliver thier data in time (ring buffer 
> > overflows).
> > If i disable DO_MULTIPLE_RECORDINGS and 
> > DO_REC_AND_PLAY_ON_PRIMARY_DEVICE so that the transfer thread is not 
> > started during a recording, still CPU usage goes up to 70%.
> >
> > With the old vdr 1.0.4 cpu usage was barely more than 10% during a 
> > recording. So i wonder, why this is the case for newer versions (even 
> > without running in transfermode).
> >
> > Does anyone have a clue where the cpu cycles go? Do i have to use a 
> > bigger cpu if i want to run vdr 1.2.x?
> >
> > Best wishes,
> > Christoph
>
>
> Are you using hardware or software section filters ?
I am using vdr-1.2.6, but i don't know how the filters (is this the 
peace of the system that only delivers the TS packets one is interested 
in?) are implemented in that software. Or does this depend on the DVB 
driver? How can i find out?

Christoph.
>

> Jean-Claude

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