The cpu clock frequency reported is just its frequency at the time you looked at /proc/cpuinfo. There is little load, so the frequency has been throttled back to minimum to save power. Load up your system and try again and you will observe a higher clock frequency.
Edit: Example (my processor minimum is 1600 MHz, max 3.4 GHz and turbot 3.8 GHz):
Code:
doug@s15:~/temp$ cat /proc/cpuinfo | grep MHz
cpu MHz : 1627.750
cpu MHz : 1627.750
cpu MHz : 1627.750
cpu MHz : 1627.750
cpu MHz : 1627.750
cpu MHz : 1627.750
cpu MHz : 1627.750
cpu MHz : 1627.750
Now load up CPU 7
Code:
doug@s15:~/temp$ cat /proc/cpuinfo | grep MHz
cpu MHz : 3699.625
cpu MHz : 3699.625
cpu MHz : 3699.625
cpu MHz : 3805.875
cpu MHz : 3699.625
cpu MHz : 3699.625
cpu MHz : 3699.625
cpu MHz : 3805.875
Note: Depending on which cpu frequency governor you are using your results may look different (I am using the intel_pstate driver).
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