> When talking about Ubuntu's on-demand kernel governor - what are you > talking about - the "powernowd" package?
No, powernowd is a just userspace client deamon much like cpufreqd (which I happen to be using). Both interact with the sysfs interface. Your Ubuntu system likely already runs with a modern kernel-level scaling power governor, i.e. on my 10.04 I can observe it's presence here: /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor Note that possibly Granola removes this entry since it assumes responsibility. The way it would do this is to issue commands much like you could yourself. I.e. to see what your CPU's are running at presently you issue: cat /proc/cpuinfo | grep MHz If your CPU support PowerNow, Cool n' Quiet and whatever the CPU manufacturer call their speed-stepping tech, you would be able to inspect this with: cat /sys/devices/system/cpu/cpuX/cpufreq/scaling_available_freq ...(where x is your core no). My Core II 6550 reports capable of throttling at 2670000 2336000 and 2003000 KHz (and is usually running at 2003000 KHz during a development session using the kernel on-demand governor). If I want my second core to go bananas because I know it has work to do, I could thus issue the command: cpufreq-selector -c 1 -f 2670000 It would remain in this state until I tell the governor to return to on-demand like this: cpufreq-selector -c 1 --governor ondemand So anyway, I would not use userspace deamons for this - I get reminded of Windows bloatware. /Casper > > Last but not least, unplug the PC + misc. when going to bed. My home- > > office setup will happily draw about 40W while doing absolutely > > nothing than producing heat. > > Fortunately my Ubuntu incl login is up in about a minute - so no more > real need to have it running when not in use. > Sometimes (when many apps open) I also often put it to suspend - also > saves a lot of power (and I guess more than any other tool can save > when running). > -- > Martin Wildamhttp://www.google.com/profiles/mwildam -- You received this message because you are subscribed to the Google Groups "The Java Posse" group. To post to this group, send email to [email protected]. To unsubscribe from this group, send email to [email protected]. For more options, visit this group at http://groups.google.com/group/javaposse?hl=en.
