Bugzilla – Bug 1636
We should enable power management by default
Last modified: 2008-08-02 23:41:22 UTC
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aubreylee@gmail.com wrote: On Fri, Apr 25, 2008 at 7:07 PM, Sriram Natarajan <Sriram.Natarajan@sun.com> wrote: > > * Indiana RC2 is still burning not lot of power when I run on my Tecra > > M2. On battery, Windows XP (my other boot partition) gives me close to 2 > > hours of battery. With Indiana RC2, I could hardly cross more than 45 > > minutes. If there is some way, I can get better battery life, I would > > really really appreciate > > Yeah, power saving will be a long way of opensolaris, not specific on indiana only. Currently, cpu power mangement option is not enabled by default. If you are aware speedstep is supported on your laptop, you could enable it(dtpower(1M)). It can definitely make your battery life longer. .... <and in another followup wrote:> okay, I checked just now, not there really. So we have to edit power.conf(4) manually. Add the following entry to /etc/power.conf ============== cpupm enable cpu-threshold 15s ============= Then run pmconfig. Thanks, -Aubrey
cpupm option is not enabled on nevada as well. I think the performance is the preference...
>we have to edit power.conf(4) manually Will some sort of UI be added for modifying these settings?
> Will some sort of UI be added for modifying these settings? Almost certainly.... the exist GUI commands in previous Solaris releases used CDE/Motif, which are not part of OpenSolaris at present for legal reasons. The entire power management framework is being redesigned anyway as part of project Tesla from what I understand, so this is all in a state of flux. For now, we'll just enable cpu power management by default using the existing mechanism (/etc/power.conf). Once Tesla makes enough progress, it will make sense to provide a proper GUI.
This was recently addressed in Nevada build 96.