CPU speed is shown wrong

[Marcin Juszkiewicz]

I have i7-2600K set to 4.0GHz but cpu-g shows 1.6GHz cause cpu is idle now.

No idea how to read proper value so maybe show range of frequencies handled by cpufreq? On my system it is:

20:21 hrw@puchatek:cpufreq$ pwd
/sys/devices/LNXSYSTM:00/LNXCPU:00/sysdev/cpufreq
20:22 hrw@puchatek:cpufreq$ cat scaling_available_frequencies
5801000 5800000 5700000 5600000 5500000 5400000 5300000 5200000 5100000 5000000 4900000 4800000 4700000 4600000 4500000 4400000 4300000 4200000 1600000

[Michał Olber (olbi)]

This is good show of current speed. CPU-Z is showing same. But I have saw, that on some new CPUs when you OC them than Linux is showing only default speed, which is set to this processor.

[Marcin Juszkiewicz (hrw)]

But it is named "Core speed" not "Current CPU speed" (which would be wrong too as it is not updated during runtime).

[Michał Olber (olbi)]

I saw that you need off in BIOS SpeedStep or Cool'n'Quiet. Than it should be a good value.

[Michał Olber (olbi)]

Maybe add here some screenshots.

[Marcin Juszkiewicz (hrw)]

1.7GHz Atom D525:

# dmidecode |grep MHz
        External Clock: 166 MHz
        Max Speed: 4000 MHz
        Current Speed: 1668 MHz
        Speed: 800 MHz

4.0GHz i7 2600K:
# dmidecode |grep MHz
        External Clock: 100 MHz
        Max Speed: 4000 MHz
        Current Speed: 4000 MHz
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: 1600 MHz
        Speed: 1600 MHz

Looks like 'Current Speed' may show what is proper value. But this would require root permission ;(

[eloaders (eloaders)]

Currently, cpu-g gets its data from /proc/cpuinfo. And it will not change.