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.

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

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