Re: CPU Throttling

Srikanth Konjarla wrote, On 04/30/2008 12:02 AM:


Paul Johnson wrote:
On 4/29/08, Srikanth Konjarla <srikanth.konjarla@xxxxxxxxx> wrote:
All,

I run Fedora 8 on Tecra M5.

http://www.smolts.org/show?uuid=pub_f72f9650-72f0-4d83-9c51-0cb13856226b

It appears that the CPU throttling is not available.

On my Dell laptop, a cpuspeed package is running. look in
system-config-services, see if you have it on.

I'm using a Nokia tablet now, don't have laptop here.

Other thought I have is that cpuspeed, rather than throttling, is the
only thing i use anymore. AFAICR, throttling would leave unused
cycles, which is almost same as making the cpu slower.
I have enabled and running the cpuspeed daemon now. However, how do I monitor if "cpuspeed" is actually working?


watch 'cat \
/sys/devices/system/cpu/cpu0/cpufreq/scaling_cur_freq; \
cat /proc/acpi/thermal_zone/TZC/temperature'

or for multiple cpu system
watch 'cat \
/sys/devices/system/cpu/cpu*/cpufreq/scaling_cur_freq; \
cat /proc/acpi/thermal_zone/TZC/temperature'

cheap, easy, available.

--
Todd Denniston
Crane Division, Naval Surface Warfare Center (NSWC Crane)
Harnessing the Power of Technology for the Warfighter

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