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Date: Wed, 13 May 2015 10:54:09 +0200
From: =?windows-1252?Q?Roger_Pau_Monn=E9?= <roger.pau@citrix.com>
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To: "Eggert, Lars" <lars@netapp.com>, "freebsd-xen@freebsd.org"
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Subject: Re: Xen dom0 "interrupt storm detected on "irq16:";
 throttling interrupt source"
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Hello,

El 13/05/15 a les 10.20, Eggert, Lars ha escrit:
> Hi,
> 
> with Xen from git and a recent -CURRENT, I get "interrupt storm detected on "irq16:"; throttling interrupt source" messages on the dom0 console about once a second. irq16 is used for ehci:
> 
> # vmstat -i | grep irq16
> irq16: ehci0                     1229805       6559
> 
> Any ideas?

Can you post the full output of vmstat -i and the log of Xen and FreeBSD
booting (with boot_verbose=YES)? If you don't have a serial console
setup you can get the Xen boot log using xl dmesg.

Roger.