Powernowd & Centrino Core Duo

[onlymee]

Just before you do... I don't understand:

You have an fancy new Core Duo (as I do)

-- But you want to run a userspace daemon?



What's wrong with ondemand, conservative and powersave

govenors. They are fast and effective and don't required

an extra process.



I'm guessing that if you have speedstep-centrino compiled as

a module then the various govenors will be compiled as modules

too. And hence may not be available by default.



I'm not certain of the module names as I always compile them in

but a "find /lib/modules -iname 'ondemand'" will probably find them.



Also,



Have any of you tried CPU hotplugging (ie. turning off a core
completely

, and turning it back on again when needed)?  You can powerdown a 

processor with:

echo 0 > /sys/devices/system/cpu/cpu1/online

and echo 1 to power it back up...



For me the processor goes offline OK and the system is happy with one

processor, but when I online it again the system reboots.



Same for you?


-- 
onlymee