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Date: Thu, 7 Jan 2010 17:02:46 +0100
From: Andi Kleen <andi@firstfloor.org>
To: "Justin P. Mattock" <justinmattock@gmail.com>
Cc: Andi Kleen <andi@firstfloor.org>, linux-wireless@vger.kernel.org,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [bisected] sys_paccept: disable paccept() causes my macbook
	pro to  have an annoying whining sound
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> As for the power management
> I didn't think so.. sounds more
> like vibration of a solder joint/capacitor

Typically those are caused by power management -- cpu going in/out 
sleep states.

You can check by e.g. limiting your CPU to C1 with 
processor.max_cstate=1

-Andi
-- 
ak@linux.intel.com -- Speaking for myself only.