How to check the CPU power management status in CentOS 7 system?

How to check the CPU energy-saving status under centos7 system?

Specific steps to check the CPU energy-saving status under the centos7 system:

1. Use the shortcut keys on the centos7 system desktop to open the centos7 terminal command line mode.

2. Use the "top" or "dstat" command to check the CPU utilization in the centos7 terminal command line.

CentOS 7 is an open source server operating system released by the CentOS project. It was officially released on July 7, 2014.

CentOS 7 is an enterprise-level Linux distribution that is redistributed from RedHat's free and open source code. The CentOS 7 kernel has been updated to 3.10.0, supports Linux containers, supports Open VMware Tools and 3D images out of the box, supports OpenJDK-7 as the default JDK, supports iSCSI and FCoE in the kernel space, supports PTPv2 and other functions.

On November 12, 2020, the official version of CentOS 7 was launched, CentOS 7.9.2009, the final version of the series.

What is freenas?

FreeNAS is a free NAS server that turns an ordinary PC into a network storage server. The software is based on FreeBSD, Samba and PHP, and supports CIFS (samba), FTP, NFS protocols, Software RAID (0,1,5) and web interface configuration tools.

Users can access the storage server through Windows, Macs, FTP, SSH and Network File System (NFS); FreeNAS can be installed on the hard disk or removable media USB Flash Disk, occupying less than 16MB of space. FreeNAS server has a bright future; its development is very active. In the first four months of 2006 alone, 11 revised versions were released. It is an excellent choice for setting up a simple network storage server without the hassle of installing a full Linux or FreeBSD.

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