linux-kernel - Re: Strange delays / what usually happens every 10 min?

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Message-ID: <4739CBF0.8000500@redhat.com>
Date:	Tue, 13 Nov 2007 11:08:16 -0500
From:	Chris Snook <csnook@...hat.com>
To:	Florian Boelstler <kernel@...lstler.net>
CC:	linux-kernel@...r.kernel.org
Subject: Re: Strange delays / what usually happens every 10 min?

Florian Boelstler wrote:
> While running that test driver a delay of about 10ms _exactly_ occurs
> every 10 minutes.

This is precisely the sort of thing that BIOS/firmware-level SMI handlers do, 
particularly those that have monitoring or management features.  Try to 
determine if the kernel is doing anything during this time.  If the entire 
kernel seems to be frozen, talk to the people who wrote the firmware.

	-- Chris
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