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Date: Wed, 4 Apr 2001 17:15:42 +0200
From: christophe barbe <christophe.barbe@lineo.fr>
To: Paul Jakma <paulj@itg.ie>
Cc: linux-kernel@vger.kernel.org
Subject: Re: uninteruptable sleep (D state => load_avrg++)
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On mer, 04 avr 2001 17:05:05 Paul Jakma wrote:
> imagine a box with a bunch of processes that do almost nothing but
> call on the kernel to do IO. If you only count the runnable state
> towards load_avg then your load_avg will be very low, even though your
> box is swamped - you are ignoring the work of the kernel.
> 
> if you count D towards load_avg then it will reflect this abstract
> 'load' concept more accurately.
> 
> Ie, counting D towards load_avg is a way of taking kernel IO work into
> account when calculating the load average figures.

ok I'm convinced.
And a measure can't be perfect.

Thank you,
Christophe

-- 
Christophe Barb?
Software Engineer
Lineo High Availability Group
42-46, rue M?d?ric
92110 Clichy - France
phone (33).1.41.40.02.12
fax (33).1.41.40.02.01
www.lineo.com
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