Re: cgroups and SCHED_IDLE

[Holger Brunck <holger.brunck-SkAbAL50j+5BDgjK7y7TUQ@public.gmane.org>]

On 07/29/2013 05:25 PM, Peter Zijlstra wrote:
> On Mon, Jul 29, 2013 at 05:14:47PM +0200, Holger Brunck wrote:
>> no, unfortunately I got the same results as before.
> 
> OK, so I'm a little confused; this works on SMP but not on UP? There's

yes this is what I see in my setup.

> lots of mention of various platforms, but since I simply don't know any
> of them its not clear if they're UP or not.
> 

as I said I have two different boards with different UPs:

arch    cpu         32/64 bit   kernel
ARM     kirkwood    32          3.10  (but 3.0 shows same problems)
powerpc MPC8247     32          3.10  (but 3.0 shows same problems)

both shows this strange behaviour.

and I have a SMP host PC (Intel(R) Core(TM)2 Quad CPU) running a 3.4 kernel
where I am unable to reproduce the problem even if I start the kernel with
maxcpus=0.

Maybe I could tomorrow have a look on another board of us which is a ppc
Quadcore. I guess this could help to increase the confusion? ;-)

Regards
Holger