[vdr] background vdr thread eating cpu

Torgeir Veimo torgeir at pobox.com
Wed Jan 3 17:05:15 CET 2007

On 3 Jan 2007, at 15:25, Klaus Schmidinger wrote:

> Halim Sahin wrote:
>> Hi Klaus,
>> On Mi, Jan 03, 2007 at 01:22:14 +0100, Klaus Schmidinger wrote:
>>> Well, the tuner thread doesn't really do that much that might
>>> eat such a lot of CPU time, one would think.
>>> Maybe you can add some debug output in cDvbTuner::Action() and
>>> cDvbTuner::SetFrontend() to find out what exactly it is doing
>>> when this happens.
>> few weeks ago  I noticed a similar Problem, that vdr eats a lot of  
>> cpu
>> power. In my HTPC there is a tt 2.3 dvb-s and a usb-dvb-t stick.
>> I did some tests with dvb-t stick plugged in and without.
>> The cpu load is about 20% higher with the stick.
>> Please tell me if you need more info to find the Problem.
>> Thanks
>> Halim
> Can you identify a particular VDR thread that consumes those
> 20% more CPU time?

I think in my particular case it's really kernel time being spent by  
the driver trying to lock onto channel 9.  I guess the tuning is done  
to collect VPG data.

Torgeir Veimo
torgeir at pobox.com

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