Managing CPU throttling

janne jan.moren at lucs.lu.se
Mon Nov 8 03:29:23 UTC 2004


sön 2004-11-07 klockan 12:31 -0600 skrev brschmid:
> i am dissapointed as well, because i want my laptop at full speed when
> plugged in, and scaled back when on battery. 
> 
> powernowd scales back all the time. 

It also scales up immediately. 

I tend to use my laptop for a mixture of things, cpu-wise; sometimes I
need very little power (reading mail, surfing, writing text or coding),
punctuated by neding all there is (compiling, doing a simulation run). I
have never had any problem with powernowd. As soon as I start something
cpu-intensive, it kicks the clock into high gear immediately, and stays
there. Once it finishes, it gradually ramps down to the lowest setting
again. And it does the same when on battery power. Perfect. Never have I
felt the kind of slowness or tardiness that I got from using cpufreqd.

In fact, my only annoyance is that my 2-cpu desktop does not support
power throttling; it would be absolutely wonderful not to have it
emulating a noisy hair dryer next to my table when I'm not actually
running any simulations on it.



-- 
Trust the Computer. The Computer is your friend.
 
Tel. (Japan) 090-3622 8920            Dr. Jan Morén (mr)
                                      Dept. of Cognitive Science
http://lucs.lu.se/people/jan.moren    Lund, Sweden





More information about the ubuntu-users mailing list