Re: Question about fair schedulers

[Helge Hafting]

Alberto Gonzalez wrote:
> On Saturday 23 June 2007, Kyle Moffett wrote:
>   
> > On Jun 22, 2007, at 18:07:15, Alberto Gonzalez wrote:
> >     
> > > Ok, so what will a fair scheduler do in this case? It is my
> > > understanding that it would give 50% CPU to each task, resulting in
> > > the video dropping frames. Is this correct?
> > >       
> > Yes, that's correct.
> >
> > What this *actually* means is that you want the media player to have
> > higher priority than the DVD ripping program.  Ergo you should run
> > "nice +20 my_dvd_burner" or "nice +20 my_vorbis_encoder" under CFS or
> > other fair schedulers.
> >     
>
> Ok, that makes sense. The problem is that desktop users don't know about such 
> things, so the ideal situation would be that the scheduler knows about it and 
> does it for you.
>   
Well, the scheduler can't really know that.  But the people who
write the dvd burning/ripping/encoding/viewing software
know what is needed, they can write their programs so they set useful 
priorities.

Helge Hafting
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