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  #1  
Old 13th November 2011, 06:27 AM
scorpiuscl Offline
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linuxfirefox
F16 cpu frequency

Hi guys

I performed a mild overclock to my processor... it was running at nearly 3.5GHz, very stable. To make use of that speed, I had to disable cpuspeed. So far, so good.
Now, I upgraded to F16, and now cpuspeed was replaced with cpupower, which do not see the true cpu frequency, but the model information (2.8GHz tops). I already had set the governor to performance, but I'm not really taking advantage of the overclock. Is there any workaround, or way to disable any scaling at all?
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Old 16th November 2011, 12:33 AM
scorpiuscl Offline
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macossafari
Re: F16 cpu frequency

Any ideas? Please?
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Old 16th November 2011, 12:40 AM
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linuxfirefox
Re: F16 cpu frequency

no ideas, and the developers of cpufreq refuse to admit there is a problem, and won't change their application (well, it's in the kernel now) for (as they put it) a few people running hardware out of specs.

The only way I was able to get mine to run at full speed was to disable EIST (or speedstep) in the system bios. This causes cpufreq to load just the P4-clockmod governor instead of the performance/userspace/ etc...

You still get only the model information when it displays the CPU speed, but your processor will run at the overclocked speed. (You still can't use cpupower to set the maximum frequency over what the rated CPU speed is, though, that's why you have to force cpufreq to not change the cpu frequency at all. If it scales it back, then you won't be able to go back to the overclocked value. just the maximum rated frequency)

I was just trying to get them to change what frequency that got displayed instead of them pulling what is in the processor. It would be a much more usable number if they displayed the actual frequency that it was running at rather than what the processor is rated at. But I got told that they weren't going to change it for just a handful of people that run their hardware out of specifications.

Last edited by DBelton; 16th November 2011 at 12:48 AM.
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  #4  
Old 16th November 2011, 05:13 AM
scorpiuscl Offline
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macossafari
Re: F16 cpu frequency

Well, that's a very dumb decition. If we wanted a lobotomized OS we would stayed with windows... The edge on Linux should be the capacity to get better performance and make things better not the other way around. Right now I'm running a matlab code that generates gigs of data, and it takes several minutes to get the result. Speed is a huge benefit here.
Also, i was testing the other day some c++ code, with huge images, and with cpuspeed fedora was taking twice the amount of time than windows to perform the same calculations. This is simple unaccectable. Disabling cpuspeed got things even. I wonder what are the numbers now...
It is sad, but i'm not liking how things are moving... (both at the OS and desktop levels). Cloud computing is a great thing, but we still need our pcs to perform intense tasks, and get the most of them.
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Old 18th July 2012, 12:24 PM
Dutchy Offline
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linuxfirefox
Re: F16 cpu frequency

Is this still an issue?
You might want to check out the cpupower monitor command.
With my overclock that one shows the right figures even with cpupower enabled.
It looks like the frequencies shown elsewhere (e.g. cpupower frequency-info, /proc/cpuinfo) are just the reference/official speeds that a processor is capable of running.
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