parsing vmstat python code explained

Publié le: 27 novembre 2023
sur la chaîne: CodeTube

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Parsing vmstat output using Python can be a useful task for system administrators and developers who want to monitor and analyze system performance. vmstat is a command-line tool available on Unix-like operating systems that provides information about various system statistics, including virtual memory, processes, and CPU utilization. In this tutorial, we'll explore how to use Python to parse the output of vmstat and extract meaningful information.
Before you begin, make sure you have Python installed on your system.
First, let's run the vmstat command to see its output. Open your terminal and type:
This command will run vmstat every second for 5 iterations, providing a snapshot of system statistics.
Now, let's create a Python script that runs the vmstat command and captures its output. We'll use the subprocess module for this task.
This script defines a function run_vmstat that runs the vmstat command and returns its output as a string. The if _name_ == "__main__": block executes the function and prints the output.
Now, let's parse the vmstat output to extract specific information. For this example, we'll focus on extracting CPU utilization information.
This script defines a function parse_vmstat that takes the vmstat output and extracts CPU statistics from the last line. The extracted information is then printed.
Save the script and run it using the following command:
Replace your_script_name.py with the actual name of your Python script.
This tutorial provides a basic example of parsing vmstat output using Python. Depending on your specific requirements, you can extend the parsing logic to extract and analyze other system statistics provided by vmstat.
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