Thank you all. Powertop and examining the sys and proc file systems showed me what I wanted to see. I'm not quite obsessive enough to need a GUI app that shows me what my CPU is doing. I just wanted to make sure CPU frequency scaling was working properly on this laptop. As it turns out it is.
Gustin touched on why I wanted to know. A few years ago I installed an earlier version of Ubuntu on a Toshiba Tecra M3. About 5 minutes after the install finished the CPU spun up and stayed that way, the laptop was too hot to touch. The M3 did use a desktop CPU so it was never a cool laptop, but that was definitely a bug in the way Linux was managing power on that laptop. -----Original Message----- From: clug-talk-boun...@clug.ca [mailto:clug-talk-boun...@clug.ca] On Behalf Of Gustin Johnson Sent: April-21-11 2:28 AM To: CLUG General Subject: Re: [clug-talk] Linxu CPU Frequency Scaling That link was Android specific, but it does a good job of showing you around some of the cpufreq and VDD interfaces present in sysfs On Thu, Apr 21, 2011 at 2:21 AM, Gustin Johnson <gus...@meganerd.ca> wrote: > /proc is like ifconfig, it has been marked deprecated since 2.4, but > shows no actual signs of going anywhere. > > Anyway, the less friendly (but technically more accurate version) can > be found at: > /sys/devices/system/cpu/cpu1/cpufreq/cpuinfo_cur_freq IIRC it is > expressed in Hz > > You may want to look here for hints on modifying the behavior: > http://www.ziggy471.com/2011/04/07/vdd-smartass-and-cpufreq-sysfs-interfaces-and-how-to-use-them/ > > That link is not for the faint of heart, as resilient as modern CPUs > are, you can still kill them. > > On Thu, Apr 21, 2011 at 12:02 AM, Mel Walters <melwalt...@telus.net> wrote: >> I have installed cpufrequtils and cpufreqd on my system. >> cpufrequtils gives you these commands: >> cpufreq-info -c 0 >> cpufreq-info -c 1 >> cpufreq-info -c 2 >> cpufreq-info -c 3 >> and >> cpufreqd-get -l >> >> looking at this has shown me it is not working correctly, I need to look >> further. (needs configuration or repairs. >> sudo lsmod | grep cpufreq >> [sudo] password for mwalters: >> cpufreq_conservative 5162 0 >> cpufreq_userspace 1992 0 >> cpufreq_stats 2659 0 >> cpufreq_powersave 902 0 >> >> I am missing the acpi related modules >> >> I still have to puzzle this out. >> >> My system is Debian squeeze >> >> /proc/cpuinfo is noted to be be depreciated and should avoid (forgot >> where I saw it) >> >> Mel >> >> On Wed, 2011-04-20 at 21:12 -0600, Craig McLean wrote: >>> Hello. >>> >>> Is there a way to know in real time what is happening to the clock speed of >>> your CPU. I'm on Ubuntu 10.10. I don't mind doing a tail -f on some log >>> file if that is what it takes. >>> >>> >>> >>> Craig. >>> >>> >>> _______________________________________________ >>> clug-talk mailing list >>> clug-talk@clug.ca >>> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >>> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >>> **Please remove these lines when replying >> >> >> >> _______________________________________________ >> clug-talk mailing list >> clug-talk@clug.ca >> http://clug.ca/mailman/listinfo/clug-talk_clug.ca >> Mailing List Guidelines (http://clug.ca/ml_guidelines.php) >> **Please remove these lines when replying >> > _______________________________________________ clug-talk mailing list clug-talk@clug.ca http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying _______________________________________________ clug-talk mailing list clug-talk@clug.ca http://clug.ca/mailman/listinfo/clug-talk_clug.ca Mailing List Guidelines (http://clug.ca/ml_guidelines.php) **Please remove these lines when replying
