How to use CoreFreq to monitor CPU performance in Linux system?

How to use CoreFreq to monitor CPU performance in Linux system?

In Linux systems, we often need to monitor the performance of the CPU to ensure the stability and efficiency of system operation. CoreFreq is an open source tool that can help us monitor CPU performance indicators in real time, including frequency, load, temperature and other information. This article will introduce in detail how to install and use CoreFreq in a Linux system, and demonstrate how to monitor CPU performance through specific code examples.

1. Install CoreFreq

First, we need to download and install the CoreFreq tool. You can install CoreFreq in a Linux system through the following steps:

$ git clone https://github.com/cyring/CoreFreq.git
$ cd CoreFreq
$ make
$ sudo make load

The above command will download the CoreFreq code from GitHub, compile and install it. Then load the CoreFreq kernel module through the sudo make load command.

2. View CPU information

After the installation is completed, we can use the following command to view the basic information of the CPU:

$ corefreq-cli -i

This command will list various information of the CPU, Including CPU model, frequency, number of cores, etc.

3. Real-time monitoring of CPU performance

Now that we have installed and viewed the basic information of the CPU, we can use CoreFreq to monitor the performance of the CPU in real time.

$ corefreq-cli -C

This command will start the console mode of CoreFreq, which can display the CPU frequency, load, temperature and other indicators in real time. We can exit console mode by pressing the q key.

4. Write a simple script to monitor CPU performance in real time

If you want to output the results of real-time monitoring of CPU performance to a file, we can write a simple Shell script to achieve this.

The following is an example to output CPU performance indicators to the cpu_performance.log file:

#!/bin/bash

while true
do
    corefreq-cli -s >> cpu_performance.log
    sleep 1
done

Save the above code to a script file (such as monitor_cpu.sh), and then run the following command:

$ chmod +x monitor_cpu.sh
$ ./monitor_cpu.sh

After running this script, the CPU performance indicators will be output to the cpu_performance.log file every second.

Through the above method, we can easily use the CoreFreq tool to monitor CPU performance, which helps us discover and solve system performance problems in a timely manner. Hope this article helps you!

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