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Date: Sun, 27 Apr 2014 16:33:54 +0200
From: Hans Petter Selasky <hps@selasky.org>
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To: huanghwh@gmail.com, 
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Subject: Re: xhci controller problem on MBPr2013
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On 04/27/14 16:28, Huang Wen Hui wrote:
> Another possible bug is: I have to remove ng_ubt as ubt0 can make xhci0
> generate very high Interrupts, about 1200~1300 after booting.
> This may be not relate to xhci controller.
>

Hi,

Maybe you can check that using "usbdump -i usbusX -f Y -s 65536 -vvv" to 
see what is generating that traffic, if it is USB related.

--HPS