Which reasons may cause low MHz of CPU

Asked May 24 '19 at 03:07

Active May 24 '19 at 03:07

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My system is Ubuntu 16.04.3. I installed it just now and executed some processes on it. I found that many processes used more than 100% CPUs. However, when I executed lscpu | grep MHz, I got the output as below:

CPU MHz: 423.687
CPU max MHz: 2200.0000
CPU min MHz: 800.0000

If I'm right, CPU MHz is the current MHz, so this is weird. Why can the current MHz be lower than CPU min MHz, even if some processes have used more than 100% CPUs?

asked May 24 '19 at 03:07

Yves

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Load is not cpu. What does vmstat say? – Rui F Ribeiro May 24 '19 at 06:58
@RuiFRibeiro vmstat looks good. `free` is large enough, `buff` and `cache` are reasonable, `swpd` is small. – Yves May 25 '19 at 01:55

Which reasons may cause low MHz of CPU

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