linux-kernel - Re: Bogus high interrupt load?

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Message-ID: <46F29D7A.9070309@redhat.com>
Date:	Thu, 20 Sep 2007 12:19:06 -0400
From:	Chuck Ebbert <cebbert@...hat.com>
To:	Aggelos Manousarides <amanous@...ccessnetworks.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Bogus high interrupt load?

On 09/18/2007 07:56 PM, Aggelos Manousarides wrote:
> 
> There is obviously something happening to the load reporting facility of
> the kernel when a periodic interrupt source is present. Has anyone seen
> something like this? I am not using any real time patches, this is a
> vanilla kernel patched only to support the platform at hand.
> 

You will get aliasing effects like that if the system clock is not
interrupting at least twice as often as your periodic interrupts occur.

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