linux-kernel - Re: sched domains oddness.

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Message-Id: <1225471911.7803.1596.camel@twins>
Date:	Fri, 31 Oct 2008 17:51:51 +0100
From:	Peter Zijlstra <a.p.zijlstra@...llo.nl>
To:	Dave Jones <davej@...hat.com>
Cc:	Linux Kernel <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: sched domains oddness.

On Fri, 2008-10-31 at 12:24 -0400, Dave Jones wrote:
> The attached dmesg comes from my dual core laptop running 2.6.27
> What's up with all the sched domains transitions at the bottom?
> This was just a boot up from power off, no suspend/resume or anything funky.

> CPU0 attaching NULL sched-domain.
> CPU1 attaching NULL sched-domain.
> CPU0 attaching sched-domain:
>  domain 0: span 0-1 level MC
>   groups: 0 1
>   domain 1: span 0-1 level NODE
>    groups: 0-1
> CPU1 attaching sched-domain:
>  domain 0: span 0-1 level MC
>   groups: 1 0
>   domain 1: span 0-1 level NODE
>    groups: 0-1

3x

looks like someone is triggering rebuild_sched_domains(), is something
poking cpusetfs files or flipping between sched_mc settings?

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