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Date: Wed, 29 Sep 2010 11:46:23 +0300
From: Andriy Gapon <avg@icyb.net.ua>
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To: Don Lewis <truckman@FreeBSD.org>
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Cc: stable@FreeBSD.org, sterling@camdensoftware.com, freebsd@jdc.parodius.com
Subject: Re: CPU time accounting broken on 8-STABLE machine after a few hours
 of uptime
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on 29/09/2010 00:11 Don Lewis said the following:
> On 28 Sep, Don Lewis wrote:
> 
> 
>> % vmstat -i
>> interrupt                          total       rate
>> irq0: clk                       60683442       1000
>> irq1: atkbd0                           6          0
>> irq8: rtc                        7765537        127
>> irq9: acpi0                           13          0
>> irq10: ohci0 ehci1+             10275064        169
>> irq11: fwohci0 ahc+               132133          2
>> irq12: psm0                           21          0
>> irq14: ata0                        90982          1
>> irq15: nfe0 ata1                   18363          0
>>
>> I'm not sure why I'm getting USB interrupts.  There aren't any USB
>> devices plugged into this machine.
> 
> Answer: irq 10 is also shared by vgapci0 and atapci1.

Just curious why Local APIC timer isn't being used for hardclock on your system.

-- 
Andriy Gapon