* Ingo Molnar <[email protected]> wrote:
> * Tobias Gerschner <[email protected]> wrote:
>
> > I did run massive_intr.c for 60 secs with increasing nproc (
> > 10,20,30,40,50,60) waiting for effects.
> >
> > Below a small table of the results
> >
> > 2.6.21.1-cfs-v16
> >
> > nproc , usability result
> >
> > 10 , serious frame drops , Firefox hardly recognizes clicked links,
> > but still usable
> > 20 - 30, usability loss ( somehow under cfs firefox never finished
> > user requests like displaying web pages or opening new pages , no
> > feedback anymore, sudden changes on the desktop )
>
> ouch! The expected load-testing result under CFS should be something
> like this:
>
> http://bhhdoa.org.au/pipermail/ck/2007-June/007817.html
i have just tried the same workload with cfs and with sd048 from -ck,
and cannot reproduce this. To make sure it's not some other change in
-ck, could you try the pure SD patches ontop of 2.6.21.1 too:
http://www.kernel.org/pub/linux/kernel/people/ck/patches/2.6/2.6.21/2.6.21-ck2/patches/2.6.21-sd-0.48.patch
http://www.kernel.org/pub/linux/kernel/people/ck/patches/2.6/2.6.21/2.6.21-ck2/patches/sched-sd-0.48-interactive_tunable.patch
Ingo
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