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From: "Steven Hartland" <killing@multiplay.co.uk>
To: "Daan Vreeken" <Daan@vehosting.nl>,
	"Jack Vogel" <jfvogel@gmail.com>
References: <201105041734.50738.Daan@vehosting.nl><201105052217.51893.Daan@vehosting.nl><BANLkTi=AMzUbjfJmvtdGaBM69YzZ2tq=0g@mail.gmail.com>
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Cc: Current@freebsd.org, Peter Jeremy <peterjeremy@acm.org>
Subject: Re: Interrupt storm with MSI in combination with em1
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----- Original Message ----- 
From: "Daan Vreeken" <Daan@vehosting.nl>
> 
> # vmstat -i
> interrupt                          total       rate
> irq3: uart1                       917384         63
> --> irq16: ehci0                   809547235      55608

Have you tried removing USB from the kernel?

USB seems to be a common course of this behaviour and here at least
removing it from the kernel fixes in all cases assuming you don't
need it for something?


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