Re: [patch] SCHED_SOFTRR starve-free linux scheduling policy ...

[Mike Galbraith]

At 12:58 AM 8/10/2003 +0100, Daniel Phillips wrote:
> On Saturday 09 August 2003 18:47, Mike Galbraith wrote:
> > 1.  SCHED_SOFTRR tasks can disturb (root) SCHED_RR/SCHED_FIFO tasks as is.
>
> What do you mean by "disturb"?

Preempt, and/or occupy cpu space which would otherwise be available for the 
root realtime task.  If a SCHED_SOFTRR task or tasks share the same queue 
with an SCHED_RR task, or occupy a higher queue, runtime of the 
SCHED_SOFTRR tasks[s] will have an effect on the root realtime task.  OTOH, 
if SCHED_SOFTRR queues were below the 'full potency' realtime queues, they 
would be able to neither preempt, not round-robin with the root authorized 
realtime task.

        -Mike 

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/