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Date: Thu, 22 Apr 2004 22:51:24 +0200
From: Eirik Oeverby <ltning@anduin.net>
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To: John Baldwin <jhb@FreeBSD.org>
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Subject: Re: SMP weirdness in -CURRENT
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Hi,

I don't *have* anything on IRQ 20.
Here's the output of vmstat -i after >2 days uptime:

[root@ranger] ~# vmstat -i
interrupt                          total       rate
irq0: clk                       22888351         99
irq1: atkbd0                       20530          0
irq8: rtc                       29298041        128
irq9: acpi0                         3902          0
irq11: cbb0 cbb1+++               203530          0
irq12: psm0                       117066          0
irq13: npx0                            1          0
irq14: ata0                       313747          1
irq15: ata1                           46          0
Total                           52845214        230
[root@ranger] ~# uptime
10:50PM  up 2 days, 15:36, 5 users, load averages: 0.14, 0.14, 0.11

Note that this is *without* the suggested loader.conf option.


/Eirik


John Baldwin wrote:
> On Wednesday 21 April 2004 04:10 am, Eirik Oeverby wrote:
> 
>>Hi,
>>
>>Yes I'm using ACPI. I assume that without ACPI things wouldn't work
>>overly well at all..?
>>When was this fix committed? I have a fairly recent kernel, too, see below.
> 
> 
> do a 'vmstat -i' to see if you are getting an interrupt storm.  If you have a 
> very high count of interrupts on IRQ 20, add the 'hw.acpi.force_sci_lo' 
> option to loader.conf as the previous poster said.
>