linux-kernel - Re: Scheduler grouping failure; division by zero in select_task_rq

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Message-ID: <1291039093.26937.9.camel@localhost>
Date:	Mon, 29 Nov 2010 14:58:13 +0100
From:	Frede Feuerstein <Frede_Feuerstein@....net>
To:	Peter Zijlstra <peterz@...radead.org>
Cc:	Ben Hutchings <benh@...ian.org>, Ingo Molnar <mingo@...e.hu>,
	603229@...s.debian.org, LKML <linux-kernel@...r.kernel.org>,
	Tejun Heo <tj@...nel.org>
Subject: Re: Scheduler grouping failure; division by zero in
 select_task_rq_fair

On Mon, 2010-11-29 at 12:50 +0100, Peter Zijlstra wrote:
> On Sun, 2010-11-28 at 20:14 +0000, Ben Hutchings wrote:
> 
> > [    0.856002] Pid: 2, comm: kthreadd Not tainted 2.6.32-5-amd64 #1 W1100z/2100z
> 
> What's in that kernel? is that simply the latest .32-stable?

It was the latest stable .32 contained in the official "squeeze".
Today a new one arrived. I shall try that tomorrow on today late night,
since i cannot reset the mill right now.

Additional remark:
When i said, that the cores contained in each chip do not share any
resources, i forgot about the clock source:
The clock is set globally for each whole chip, i.e. CPU0 and CPU1 are
always running on the same clock, as well as CPU2 and CPU3 do.

Best regards

Tilo Hacke

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