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To: "Poul-Henning Kamp" <phk@phk.freebsd.dk>
From: Ian FREISLICH <if@hetzner.co.za>
In-reply-to: Your message of "Wed, 25 Jan 2006 20:09:54 +0100."
	<19559.1138216194@critter.freebsd.dk> 
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Cc: Alexander Leidinger <Alexander@Leidinger.net>, current@freebsd.org,
	arch@freebsd.org
Subject: Re: [TEST/REVIEW] CPU accounting patches 
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"Poul-Henning Kamp" wrote:
> In message <E1F1kOm-000FY2-8Z@hetzner.co.za>, Ian FREISLICH writes:
> 
> >"One second's worth of the computer's processing time, which is
> >based on actual machine cycles used, not calendar time." ?
> >
> >Is the getrusage() manual page out of date?
> 
> Yes.
> 
> It was written before anybody had gotten the rather weird idea to
> have a CPU change frequency.  Back then it was all about running
> as fast as possible all the time.
> 
> We are therefore forced to try to divine the intent behind the text,
> and as somebody who were around back in the eighties I can testify
> that the intent was to be able to bill computer users for CPU
> instructions.

I wonder how many people still bill for CPU time?  I'd go for the
faster context switches.

Ian

--
Ian Freislich