linux-kernel - Re: CPU load

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Message-Id: <200702121657.l1CGvRh5010463@cichlid.com>
Date:	Mon, 12 Feb 2007 08:57:27 -0800
From:	Andrew Burgess <aab@...hlid.com>
To:	av1474@...tv.ru, linux-kernel@...r.kernel.org
Subject: Re: CPU load

On 12/02/07, Vassili Karpov <av1474@...tv.ru> wrote:
>
> How does the kernel calculates the value it places in `/proc/stat' at
> 4th position (i.e. "idle: twiddling thumbs")?
>
..
>
> Later small kernel module was developed that tried to time how much
> time is spent in the idle handler inside the kernel and exported this
> information to the user-space. The results were consistent with our
> expectations and the output of the test utility.
..
> http://www.boblycat.org/~malc/apc

Vassili

Could you rewrite this code as a kernel patch for
discussion/inclusion in mainline? I and maybe others would
appreciate having idle statistics be more accurate.

Thanks for your work
Andrew

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