On Wed, Oct 03, 2007 at 01:56:46PM +0200, Ingo Molnar wrote:
>
> * Jarek Poplawski <[email protected]> wrote:
>
> > On Wed, Oct 03, 2007 at 12:55:34PM +0200, Dmitry Adamushko wrote:
> > ...
> > > just a quick patch, not tested and I've not evaluated all possible
> > > implications yet.
> > > But someone might give it a try with his/(her -- are even more
> > > welcomed :-) favourite sched_yield() load.
> >
> > Of course, after some evaluation by yourself and Ingo the most
> > interesting should be Martin's Michlmayr testing, so I hope you'll Cc
> > him too?!
>
> My current take on this: queue the current task right to the next
> position in the tree (this is what this patch achieves in essence) was
> one of the yield implementations we already tried in CFS but it didnt
> meet the expectations of some apps. So i can only repeat my argument:
> this is not something that can be "solved" in the way you imagine and
> your arguments just reiterate the path that CFS has already taken in the
> past. So please do not expect _us_ to go out and pester people. If
> people feel so inclined, they are of course welcome to test out various
> approaches. (they might as well try the original yield-granularity patch
> which also makes the amount of "delay" tunable, so the ideal amount of
> delay can be figured out. And of course they should also try the
> existing yield flag.)
I'm terribly sorry! Of course, the last thing I would like is to
pester anybody. I simply wasn't sure you've told about the same
idea. And of course, there is no reason to go back to something
checked before.
Thanks,
Jarek P.
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