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Date:      Sun, 11 May 2003 22:20:38 -0400 (EDT)
From:      Andrew Gallatin <gallatin@cs.duke.edu>
To:        Paul Richards <paul@freebsd-services.com>
Cc:        current@freebsd.org
Subject:   Re: Interrupt latency problems
Message-ID:  <16063.1270.712211.263308@curly.cs.duke.edu>
In-Reply-To: <1052703871.4921.146.camel@cf.freebsd-services.com>
References:  <22333.1052574519@critter.freebsd.dk> <20030511.134504.85393710.imp@bsdimp.com> <1052684139.4921.3.camel@cf.freebsd-services.com> <20030511.143231.133432780.imp@bsdimp.com> <1052692357.4921.128.camel@cf.freebsd-services.com> <16062.59918.302092.929640@curly.cs.duke.edu> <1052703871.4921.146.camel@cf.freebsd-services.com>

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Paul Richards writes:
 > 
 > As a further datapoint to my last email:
 > 
 >    20  ??  WL     5:16.38  (irq9: fxp0 acpi0)
 > 
 > I'll see if I can shift the interrupts around in the bios but I don't
 > think I can since fxp is onboard.

I think you might be able to reserve IRQ 9 for some legacy device or
something in the BIOS.

 > Perhaps acpi doesn't do anything to check whether the interrupt belongs
 > to it or not and so when an fxp interrupt arrives the acpi handler gets
 > called.

That's a good theory.  I think you might have something there.


Drew



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