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Date:      Tue, 23 May 2006 17:38:27 +0200
From:      Fabian Keil <freebsd-listen@fabiankeil.de>
To:        Charles Howse <chowse@charter.net>
Cc:        FreeBSD Questions <freebsd-questions@freebsd.org>
Subject:   Re: Best Practices - interrupt storm
Message-ID:  <20060523173827.0f925695@localhost>
In-Reply-To: <302D38D7-E688-47B7-859F-5DDB56E2A2EB@charter.net>
References:  <302D38D7-E688-47B7-859F-5DDB56E2A2EB@charter.net>

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Charles Howse <chowse@charter.net> wrote:

> FreeBSD 6.1-RELEASE, cups-1.1.23.0_1, HP 1100 LaserJet
>=20
> I've found quite a bit of information about how to deal with:
> "Interrupt storm detected in "irq7:"; throttling interrupt source"
>=20
> 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
>=20
> IIRC, in the past, I have used lptcontrol to set polled mode, but =20
> that resulted in:
> "too many stray irq7's, not logging any more"
>=20
> Can anyone suggest a method to make both "interrupt storm" and "too =20
> 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
--=20
http://www.fabiankeil.de/

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