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Date: Sun, 07 Oct 2001 17:33:31 +0300
From: Mika Liljeberg <Mika.Liljeberg@welho.com>
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To: Ingo Oeser <ingo.oeser@informatik.tu-chemnitz.de>
CC: Alan Cox <alan@lxorguk.ukuu.org.uk>, Benjamin LaHaise <bcrl@redhat.com>,
        Linus Torvalds <torvalds@transmeta.com>, linux-kernel@vger.kernel.org
Subject: Re: Context switch times
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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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