Re: SCHED_IDLE documentation

[Arnd Bergmann]

On Monday 03 March 2008, Ingo Molnar wrote:
> > * What's the difference between SCHED_IDLE and SCHED_BATCH?
> 
> SCHED_BATCH can still have nice levels from -20 to +19, it is a modified 
> SCHED_OTHER/SCHED_NORMAL for "throughput oriented" workloads.
> 
> SCHED_IDLE overrides the nice settings and it means a "super idle" 
> workload.

Does that mean that a SCHED_IDLE task still runs some of the time if
you have a CPU hog running on +19, or can any other process starve the
SCHED_IDLE task?

What happens if you have two SCHED_IDLE tasks on a single CPU, do they get
equal share, or will they just run as batch jobs?

	Arnd <><
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