Re: Context switch times

Mika Liljeberg (Mika.Liljeberg@welho.com)
Sun, 07 Oct 2001 17:33:31 +0300

Ingo Oeser wrote:
> There are idle tasks per CPU. If there are runnable tasks and the
> idle-task of a CPU is running it, it is not fully loaded at this
> time.
>
> No idle task is running, if all CPUs are fully loaded AFAIR.

Yes. However, you still want to balance the queues even if all CPUs are
100% utilized. It's a fairness issue. Otherwise you could have 1 task
running on one CPU and 49 tasks on another.

MikaL
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