Messages in this thread | | | Date | Sun, 6 Jul 2008 21:48:45 +0200 | From | Pavel Machek <> | Subject | Re: v2.6.26-rc7: Negative powertop values |
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On Sat 2008-06-21 14:16:15, Arjan van de Ven wrote: > On Sat, 21 Jun 2008 21:16:37 +0200 > "Vegard Nossum" <vegard.nossum@gmail.com> 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]
We should really fix that one day... Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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