Re: [ckrm-tech] Re: [PATCH 0/9] CPU controller

[Mike Galbraith <efault@gmx.de>]

On Fri, 2006-04-28 at 16:56 +0900, MAEDA Naoaki wrote:
> On Fri, 28 Apr 2006 09:41:09 +0200
> Mike Galbraith <efault@gmx.de> wrote:
> 
> > On Fri, 2006-04-28 at 16:26 +0900, MAEDA Naoaki wrote:
> > > On Fri, 28 Apr 2006 08:59:49 +0200
> > > Mike Galbraith <efault@gmx.de> wrote:
> > > > You simply cannot ignore interactive tasks.  At the very least, you have
> > > > to disallow requeue if the resource limit has been exceeded, otherwise,
> > > > this patch set is non-functional.
> > > 
> > > It can be easily implemented on top of the current code. Do you know a good
> > > sample program that is judged as interactive but consumes lots of cpu?
> > 
> > X sometimes, Mozilla sometimes,... KDE konsole when scrolling,...
> > anything that on average sleeps more than roughly 5% of it's slice can
> > starve you to death either alone, or (worse) with peers.
> 
> They are true interactive tasks, aren't they? 
> Oh! I should say "that is not interactive, but judged as interactive
> and consumes lots of cpu". 

Why do you care?  There is only one thing that matters, and that is the
fact that cpu can be used and remain utterly uncontrolled.  This renders
your system non-functional for resource management.  Period.  All stop.

	-Mike