Monitoring CPU usage in GHz using Prometheus node_exporter

[akharin madahi]

 I simply monitor CPU usage in percentage format, but I don't know how to monitor CPU in gigahertz format. any ideas?  

[Harkishen Singh]

You can use node_exporter since it exposes a metric (along with per core information): node_cpu_scaling_frequency_hertz

For getting in GHz, node_cpu_scaling_frequency_hertz/1000000000  should do the work. 

Also, these should be asked in the prometheus-users group.