linux-kernel - Re: 2.6.20-rc6-mm3

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Date:	Thu, 01 Feb 2007 21:01:41 +0100
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Mattia Dongili <malattia@...ux.it>
Cc:	Andrew Morton <akpm@...l.org>, linux-kernel@...r.kernel.org,
	mingo@...hat.com
Subject: Re: 2.6.20-rc6-mm3

On Thu, 2007-02-01 at 20:36 +0100, Thomas Gleixner wrote:
> On Thu, 2007-02-01 at 00:21 +0100, Mattia Dongili wrote: 
> > yes, slowness is gone. Any useful information I can provide?
> 
> Can you please try with CONFIG_ACPI_PROCESSOR=y instead of =m ? This
> should make the slowness go away too.
> 
> I think I know what happens. I try to reproduce with
> CONFIG_ACPI_PROCESSOR=m.

Hmm. Not reproducible on my jinxed Sony. 

It might be helpful if you could try with your original config again.
Please enable printk timestamps and SysRq. Once the slowness kicks in
please issue a SysRq-Q, so we can look at the internal state of the tick
code.

Thanks,

	tglx


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