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From: YongHyeon PYUN <pyunyh@gmail.com>
Date: Thu, 1 Mar 2012 17:29:55 -0800
To: Pavel Gorshkov <gorshkov.pavel@gmail.com>
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Cc: freebsd-stable@freebsd.org
Subject: Re: msk0: interrupt storm
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On Wed, Feb 29, 2012 at 01:03:29AM +0400, Pavel Gorshkov wrote:
> My laptop running 9.0-RELEASE/amd64/GENERIC freezes and
> (sometimes) unfreezes intermittently, logging the following:
> 
> Feb 28 23:07:36 lifebook kernel: interrupt storm detected on "irq259:"; throttling interrupt source
> 
> $ vmstat -i
> ...
> irq259: mskc0                   11669511       3456
> 
> 
> Looks very similar to this:
> http://www.freebsd.org/cgi/query-pr.cgi?pr=164569
> 
> Any suggestions?

Try disabling MSI and see whether that makes any difference.