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Date:      Mon, 12 May 2003 08:55:34 -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:  <16063.39366.930707.980678@grasshopper.cs.duke.edu>
In-Reply-To: <20030512124753.GA48753@survey.codeburst.net>
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> <16063.38255.961273.900146@grasshopper.cs.duke.edu> <20030512124753.GA48753@survey.codeburst.net>

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Paul Richards writes:
 > 
 > I tried shifting the irq around last night, the bios does support this.
 > I definitely think there's something to this theory, when I put it on
 > irq 10 the problem got a whole lots worse to the point that the machine
 > couldn't be used and I had to reboot it (just error messages streaming
 > past on the console).
 > 
 > Unfortunately, I don't know what else was on irq10 at the time since
 > they move around when I change the bios settings.
 > 
 > I'm continuing to poke around to find out exactly what's causing
 > what....

I have this vague memory that the acpi always uses irq 9.  Perhaps
you inadvertently moved something else which generates more interrupts
onto irq 9..

Drew



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