Re: [gentoo-user] Re: Kon Colivas is working again on a new scheduler for Desktop/Multimedia/Gaming PCs

[Volker Armin Hemmann]

On Sonntag 06 September 2009, Nikos Chantziaras wrote:
> On 09/06/2009 01:48 AM, Volker Armin Hemmann wrote:
> > On Samstag 05 September 2009, Nikos Chantziaras wrote:
> >> On 09/05/2009 05:59 PM, Volker Armin Hemmann wrote:
> >>>> 1000 Hz timer freq
> >>>
> >>> change that to 300
> >>>
> >>>> Did you mean tickless system with "noticks"? I have this enabled ATM
> >>>
> >>> deactivate that.
> >>
> >> Even with that, there still are problems.  With composite enabled, move
> >> an mplayer window around and see how the video starts to skip big
> >> amounts of frames at the moment you start moving and when you "drop" it
> >> again.  The compositor takes away CPU time and mplayer starves for a
> >> short time.  BFS solves this.
> >
> > nope. No drops. vlc, xine, mplayer. At least no visible drop - and none
> > of the three is complaining.
>
> Well, not here.
>
> > But there is a pro-tip: use a non-broken X. aka one with
> >
> > fedora_dont_backfill_bg_none.patch
>
> I do use that.
>
> >> Also, have you considered that you got it all backwards?  The kernel
> >> configuration tells you that for lower latencies, you should use 1000Hz
> >> and PREEMPT.  It even says "Desktop" right there.  Why should I take
> >> your word over that of the kernel devs who actually wrote that code?
> >
> > low latency means bad throughput and that hurts IO.
>
> GUI stalls still happen with high latency settings.  Doesn't seem to
> matter; 300Hz, 1000Hz, tickless or not, PREEMPT or not, multicore
> scheduler or not, all the same.  GUI stalls during load.  It only goes
> away with Con's scheduler.
>

attached is my config. Because I don't need Con's scheduler for a nice desktop 
experience.

What am I doing wrong?