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From: Jung-uk Kim <jkim@niksun.com>
Organization: Niksun, Inc.
To: freebsd-current@freebsd.org, Dan Cojocar <dan.cojocar@gmail.com>
Date: Tue, 29 Mar 2005 13:35:33 -0500
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Subject: Re: Interrupt storm
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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

Jung-uk Kim

> If you need more info please ask.
> Thanks,
> Dan