Best Practices - interrupt storm

[Fabian Keil]

Charles Howse <chowse at charter.net> wrote:

> FreeBSD 6.1-RELEASE, cups-1.1.23.0_1, HP 1100 LaserJet
> 
> I've found quite a bit of information about how to deal with:
> "Interrupt storm detected in "irq7:"; throttling interrupt source"
> 
> Problem is, it's a little confusing.
>  From what I've gathered, the options are:
> Use the BIOS to set the printer port to ECP,
> Use lptcontrol to set the port to polled mode,
> Use device.hints to do both
> 
> IIRC, in the past, I have used lptcontrol to set polled mode, but  
> that resulted in:
> "too many stray irq7's, not logging any more"
> 
> Can anyone suggest a method to make both "interrupt storm" and "too  
> many stray irq7's" go away?

hw.intr_storm_threshold changes the meaning of "storm",
I don't know how/if it influences "stray irq" messages though.

Fabian
-- 
http://www.fabiankeil.de/
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