Posts: 299
Cuttlefish
Joined: 18 Dec 2008
#1
Hello,
I've been busy installing and reinstalling various distros on a lappy that I may keep.
The CPU is an N620.

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I've noticed that when I inxi -F, in antiX M11 pt 2.5, the reading tells me that I'm only operating at 800 MHz. Is there something that is downclocking my cpu? Is it a setting that I can tweak? My optimum clock speed should be something like 2792.688. __{{emoticon}}__

Thanks in advance.
Dave
Posts: 299
Cuttlefish
Joined: 18 Dec 2008
#2
cpufrequtils?

How do I activate it. I see that in Synaptic I have it installed.
Cuttlefish
Posts: 299
Cuttlefish
Joined: 18 Dec 2008
#3
Or perhaps uninstalling it would be better?
Posts: 903
plvera
Joined: 11 Oct 2008
#4
Dave,
It's interesting that you noticed this behavior. I checked my laptop running 8.2 and my clock speeds are also at 800.
The chip is an AMD Turion 64x2, and I though it would clock at 2.2G (but I have to recheck this; it's been a while).
So, what's holding back the chips?

Actually, just checked using CC>Manage hardware and it reads the chip at 2GHz. So there's a discrepancy between what
inxi is picking up and whatever program is being called up from CC to evaluate the hardware.

Pedro
Posts: 299
Cuttlefish
Joined: 18 Dec 2008
#5
Pedro,

when I did a complete removal of cpufrequtils on my test box my AMD Athlon 4800, I get the maximum clock speed for both cores of 2511.530. Previously it was 1000 MHz

I think that I will try reinstalling antiX M 11 on my laptop and see if I get the performance that I expect after I completely remove cpufrequtils. It probably would be better if I were to learn how to use the utility, but that will come later if I am successful with this project..

Dave
Posts: 903
plvera
Joined: 11 Oct 2008
#6
thanks for the update. Keep me posted on the results. I have no idea what cpufrequtils does but will try to look it up.

I did notice that if I tried several instances of inxi -F, maybe 1/6, the clocks would read 1G each as they should. Don't know what that means either.
Posts: 299
Cuttlefish
Joined: 18 Dec 2008
#7
I reinstalled M11 on the laptop without installing laptop mode or settings and cpufrequtils. They now are part of the install process too as a choice.

The clock speed is now 2792. I'll let you know how things go.

cpufrequtils enables one to control various cpu parameters. I think mostly to conserve power or battery.
Posts: 2,238
dolphin_oracle
Joined: 16 Dec 2007
#8
cpufrequtils by default sets the cpu to throttle back when the power is not needed throught a profile called"ondemand". I don't know the specifics of your chips, by my little atom processor cycles between 800mhz and 1.6 ghz. This is certainly a batter, and heat, saving measure. you can set the profile to"performance" if you want your system at full power for some reason, or to a lesser battery save mode that will prevent the cpu from throttling up. there are command line tools that are part of the package that allow you to manually set all sorts of parameters, and some of the power managers (xfce, gnome) use this package as well.

as usual, the arch wiki on the subject is rather complete and well written.


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Posts: 903
plvera
Joined: 11 Oct 2008
#9
Thanks for the information and the link!
Posts: 299
Cuttlefish
Joined: 18 Dec 2008
#10
Yes, thanks d_o. The wiki describes it as a scaling control, so I doubt that I will see any performance change.
__{{emoticon}}__
Dave