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Date: Mon, 10 May 2010 18:38:36 -0600
From: Robert Hancock <hancockrwd@gmail.com>
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To: Donald Allen <donaldcallen@gmail.com>
CC: linux-kernel@vger.kernel.org
Subject: Re: PROBLEM: tickless scheduling
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On 05/10/2010 06:34 PM, Donald Allen wrote:
> On Mon, May 10, 2010 at 8:27 PM, Robert Hancock<hancockrwd@gmail.com>  wrote:
>> On 05/10/2010 06:18 PM, Donald Allen wrote:
>>>
>
>>
>> Can you post dmesg output from bootup?
>
> See attached.
>
> /Don Allen
>>

I don't see anything too abnormal, except this:

ACPI: NR_CPUS/possible_cpus limit of 1 reached.  Processor 1/0x1 ignored.

I assume your kernel is compiled without SMP support, but you have an 
Atom CPU that supports hyperthreading. I don't know if it's related but 
you could try fixing that and see if it changes anything.