Re: [RFC PATCH RT] push waiting rt tasks to cpus with lower prios.

--
On Tue, 9 Oct 2007, Steven Rostedt wrote:

> This has been complied tested (and no more ;-)
>
>
> The idea here is when we find a situation that we just scheduled in an
> RT task and we either pushed a lesser RT task away or more than one RT
> task was scheduled on this CPU before scheduling occurred.
>
> The answer that this patch does is to do a O(n) search of CPUs for the
> CPU with the lowest prio task running. When that CPU is found the next
> highest RT task is pushed to that CPU.

I don't want that O(n) to scare anyone. It really is a O(1) but with a
K = NR_CPUS. I was saying if you grow the NR_CPUS the search grows too.

-- Steve

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---

• References:
  • [PATCH 0/5] RT: scheduler fixes and rt_overload enhancements
    • From: Gregory Haskins <[email protected]>
  • Re: [PATCH 0/5] RT: scheduler fixes and rt_overload enhancements
    • From: Steven Rostedt <[email protected]>
  • Re: [PATCH 0/5] RT: scheduler fixes and rt_overload enhancements
    • From: Gregory Haskins <[email protected]>
  • [RFC PATCH RT] push waiting rt tasks to cpus with lower prios.
    • From: Steven Rostedt <[email protected]>

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