Re: [PATCH][RSDL-mm 0/7] RSDL cpu scheduler for 2.6.21-rc3-mm2

Con Kolivas
2007-03-13T09:22:14Z

On Tuesday 13 March 2007 19:18, Ingo Molnar wrote:
> * Mike Galbraith <efault@gmx.de> wrote:
> > [...] The situation as we speak is that you can run cpu intensive
> > tasks while watching eye-candy. With RSDL, you can't, you feel the
> > non-interactive load instantly. [...]
>
> i have to agree with Mike that this is a material regression that cannot
> be talked around.
>
> Con, we want RSDL to /improve/ interactivity. Having new scheduler
> interactivity logic that behaves /worse/ in the presence of CPU hogs,
> which CPU hogs are even reniced to +5, than the current interactivity
> code, is i think a non-starter. Could you try to fix this, please? Good
> interactivity in the presence of CPU hogs (be them default nice level or
> nice +5) is _the_ most important scheduler interactivity metric.
> Anything else is really secondary.

Well I guess you must have missed where I asked him if he would be happy if I
changed +5 metrics to do whatever he wanted and he refused to answer me. That
would easily fit within that scheme. Any percentage of nice value he chose. I
suggest 50% of nice 0. Heck I can even increase it if he likes. All I asked
for was an answer as to whether that would satisfy his criterion.

> Ingo
>
> ps. please be nice to each other - both of you are long-time
> scheduler contributors who did lots of cool stuff :-)

I have been civil. Only one email crossed the line on my part and I apologise.

--
-ck