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blue_lizard

Member

Registered: 2006-08-31

Posts: 6

cpufreqd ignoring load on processor 1

Hello,

i noticed the following problem on my Samsung R510 laptop. Cpufreqd completely ignores the load on cpu1.
I check this the following way:
As user:

while (1=1); do pwd; done

As root:

taskset -p 1 pidof_the_process # cpu frequency rises to 2.26GHz
taskset -p 2 pidof_the_process # cpu frequency sinks to 800MHz
taskset -p 3 pidof_the_process # depending on which processor the process is the frequency jumps between 800MHz and 2.26GHz.

Anybody else notices such behavior?

eldragon

Member

From: Buenos Aires

Registered: 2008-11-18

Posts: 1,029

Re: cpufreqd ignoring load on processor 1

yes, same happens here........... file a bug? i used burnMMX during tests..

EDIT: i realized i was only watching cpu0 for scaling, this is why it seems like it only scales up cpu0.. ive added a second applet for cpu1 and now when i switch afinity, cpu scaling switches accordingly...

so it works as expected

Last edited by eldragon (2009-05-22 12:30:52)

blue_lizard

Member

Registered: 2006-08-31

Posts: 6

Re: cpufreqd ignoring load on processor 1

Oh i am really sorry.
I really didn't know that CPUs can scale independently. I thought that the frequency of the first processor is the same as the frequency of the second. Thats not the case. They scale independently. I didn't knew that.
Please delete this foolish thread.