Re: logging server C-state time?

From: Arjan van de Ven
Date: Mon Nov 03 2008 - 14:59:32 EST

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In reply to: Chris Snook: "logging server C-state time?"
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On Mon, 03 Nov 2008 14:47:52 -0500
Chris Snook <csnook@xxxxxxxxxx> wrote:

> Hey folks --
>
> I'm interested in logging the amount of time that server CPUs spend
> in various C-states over the course of a complicated job, ideally in
> a manner I could sync up with output from sysstat tools. So far all
> the tools I've seen for power monitoring seem to be targeted to
> laptops and interactive use, but I'm looking for something that's
> scriptable and doesn't need ACPI battery information, even if that
> means relying on indirect measurements of power use like C-states.
> Any suggestions?

powertop gives you the C state information accumulated over time...
just look at the code how it does that ;)

--
Arjan van de Ven Intel Open Source Technology Centre
For development, discussion and tips for power savings,
visit http://www.lesswatts.org
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