Re: v2.6.26-rc7: Negative powertop values

[Arjan van de Ven]

On Sat, 21 Jun 2008 21:16:37 +0200
"Vegard Nossum" <vegard.nossum@xxxxxxxxx> wrote:

> Hi,
> 
> I was testing v2.6.26-rc7 by running lmbench and hotplug/-unplugging
> CPUs and a few other programs at the same time. Powertop was showing a
> negative number of wakeups/second and average C3 residency was
> something really insane. Is there anything strange with this schedstat
> file, or is there another file I should look at that can explain the
> strange powertop numbers? Or maybe it's just an artifact of powertop
> and this has nothing to do with the kernel?

powertop doesn't assume you do cpu hotunplug (and the internal state
goes wacky if you do).

[I assume you know that doing a software unplug you burn more power
than by leaving the cpu idle]


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