SiR GadaBout: > Hi, > > PowerTOP 1.97 beta 1; Ubuntu 11.10 server; kernel 3.0.0-13-server > x86_64. > > Any "tunables" that I toggle in PowerTOP revert to "bad" on rebooting my > server. The "tunables" in question are:
[lots 'o' bad stuff]
> I've tried (where I can) to change the settings for the listed
> "tunables" manually in the OS, but even those revert to default
> settings on reboot.
That's intentionally ;-). Powertop is a tool for diagnosis, not for
solution.
> Advice on making changes implemented through PowerTOP stick would be
> much appreciated.
If you're running a desktop system, those bad readings should not really
matter for you. OK, perhaps you can tune idle power consumption down a
little (in my experience, around 30%) but this might impact performance and
your peak power drain will basically remain the same. For the layman, not
worky ;-).
If you're using a laptop, then it looks different. I have mine configured
in a way that on AC power most stuff goes red (what do I care for power?
Someone has to provide some basic load to our beloved nuclear power
plants ;-).
If it's running on battery, all the reds are gone. And power consumption is
even neater than under Windoz. To accomplish this I'd recommend installing
laptop-mode-tools and spend a good weekend in configuring it. (But beware,
I'm a Debian guy, no Ubuntu user.)
regards,
Dietz
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