[vdr] vdr slowness when browsing channels

Reinhard Nissl rnissl at gmx.de
Sun Aug 7 10:10:42 CEST 2005


Guy Roussin wrote:

> I notice that vdr is slow when i try to quickly browse 
> channels. it eats around 18-20% of the cpu (atlon1200) when
> i hold left or right key when browsing channels (vdr 1.3.27 
> vanilla - classic skin) .
> With text2skin (1.0) and Enigma, it eats around 40-50% of
> the cpu and browsing channels is very very slow ...
> Note: cat channels.conf | wc -l  --> 2600 lines

Just give the attached patch a try and report the effect.

The problem seems to be, that for scrolling one line, all 2600 channels 
are sent to plugins. The patch changes this behaviour to just send those 
channels to plugins that will be shown on screen by VDR.

Other people say that this change is not good as some plugins are able 
to display more lines than VDR does and therefore they nolonger receive 
the necessary data.

I'd vote for a change in API where VDR just announces the lines it will 
display on screen and any plugin that needs more lines than that should 
be able to pull this data on its own.

Dipl.-Inform. (FH) Reinhard Nissl
mailto:rnissl at gmx.de
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