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From: John Baldwin <jhb@FreeBSD.org>
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Date: Tue, 5 Apr 2005 10:30:42 -0400
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cc: Dan Cojocar <dan.cojocar@gmail.com>
cc: Jung-uk Kim <jkim@niksun.com>
Subject: Re: Interrupt storm
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On Tuesday 29 March 2005 01:35 pm, Jung-uk Kim wrote:
> On Tuesday 29 March 2005 01:22 pm, Dan Cojocar wrote:
> > Hello all,
> >
> > I noticed the following interrupt storm in my dmesg:
> >
> > Interrupt storm detected on "irq11: rl1"; throttling interrupt
> > source Interrupt storm detected on "irq5: rl0"; throttling
> > interrupt source
> >
> > Here is my vmstat -i:
> > interrupt                          total       rate
> > irq0: clk                         128600        199
> > irq1: atkbd0                        2499          3
> > irq4: sio0                             2          0
> > irq5: rl0                         128901        200
> > irq8: rtc                          82294        127
> > irq11: rl1                        128902        200
> > irq12: psm0                        16152         25
> > irq14: ata0                        12600         19
> > irq15: ata1                           71          0
> > Total                             500021        776
> >
> > and here is my dmesg:
> > http://cs.ubbcluj.ro/~dan/dmesg.txt
> >
> > I have options DEVICE_POLLING and options HZ=200, i have tested
> > with greater HZ values like 1000, and without DEVICE_POLLING  but i
> > have the same storm.
>
> Try this:
>
> http://docs.freebsd.org/cgi/mid.cgi?200503161154.04555.jkim

He's not using an APIC so that won't make any difference.

-- 
John Baldwin <jhb@FreeBSD.org>  <><  http://www.FreeBSD.org/~jhb/
"Power Users Use the Power to Serve"  =  http://www.FreeBSD.org