How to Stress Test Your CPU on Linux


Stress testing your CPU is an essential task that can help you identify potential issues and ensure your system is stable and reliable under heavy workloads. Fortunately, Linux offers several tools to stress test your CPU, including the “Stress” tool and “S-TUI” utility. In this guide, we will explain how to stress test your CPU from the command line on Linux using Stress and S-TUI.

Using Stress and S-TUI

Stress and S-TUI are two Linux command-line tools used for monitoring and stress-testing the system’s CPU and other hardware components.

Stress is a simple command-line tool that is used to simulate high CPU and memory usage on a system. This tool can be used to test the stability of a system by stressing the CPU, RAM, and disk I/O. It is commonly used by system administrators to test the stability and reliability of servers and other critical systems.

S-TUI (short for “Simple Terminal UI for monitoring your computer”) is a command-line tool that provides real-time monitoring of the system’s CPU temperature, frequency, and utilization. It presents this information in a simple, user-friendly terminal interface. S-TUI also has the ability to stress-test the CPU by increasing its utilization to simulate a heavy load.

Step 1: Open Terminal

Open the terminal by pressing Ctrl + Alt + T on your keyboard or by searching for it in the applications menu.

Step 2: Install Stress and S-TUI

On Debian/Ubuntu-based distros, run:

sudo apt install stress s-tui

On Fedora/RPM-based distros, run:

sudo dnf install stress s-tui

On Arch-based distros, run:

sudo pacman -S stress s-tui

Step 3: Determine CPU Cores

Before you can start the stress test, you need to determine the number of CPU cores in your system. This information is important because you need to specify the number of threads to be used by the Stress tool.

To find out the number of CPU cores, run:


The output will display the number of CPU cores in your system. Make a note of this number as you’ll need it in the next step.

Step 4: Run Stress Test

To run the stress test using the Stress tool, run:

stress –cpu <number of threads> –timeout <duration in seconds>

Replace <number of threads> with the number of CPU cores you determined in the previous step. For example, if your system has 4 CPU cores, run:

stress –cpu 4 –timeout 60

This command will run the stress test for 60 seconds, during which the CPU will be under heavy load.

Step 4: Monitor System

While the stress test is running, you should monitor the system for any signs of instability or issues using the S-TUI utility.

To start S-TUI, run:


The S-TUI interface will appear, showing real-time CPU usage and temperature. Keep an eye on the CPU temperature, frequency, and any error messages that may appear in the terminal.

If you notice any issues or instability, you should stop the stress test immediately by pressing Ctrl + C in the terminal.

Step 5: Interpret the Results

After the stress test is complete, you should interpret the results to determine the stability of your CPU. If the system remained stable, and no errors were reported, your CPU is likely to be reliable and stable under heavy workloads.

However, if the system crashed, became unstable, or generated errors, you may need to investigate further to identify the cause of the issue. You might need to adjust your CPU’s cooling, apply a firmware update, or replace a faulty component.


Stress testing your CPU is an essential task that can help you identify potential issues and ensure your system is stable and reliable under heavy workloads. By using the Stress tool and S-TUI utility from the command line on Linux, you can simulate high workloads and identify any potential issues or weaknesses in your system. By following the steps outlined in this article, you can easily stress test your CPU and ensure the reliability and stability of your system.

Please Leave Feedback and Corrections in the Comments

More to Explore

Table of Contents

Leave a Reply

Your email address will not be published. Required fields are marked *

What are you looking for?

Type in a question or keyword below

Frequently Asked Questions

Do you have any discounts or coupons?

All of our current discounts and deals are listed under the “Promotions” category at the top of the configuration page for each laptop.


What is your return policy?

Any laptop purchased from MALIBAL.COM may be returned or exchanged only in accordance with MALIBAL’S return policy in effect on the date of the invoice or acknowledgment. You must contact us directly before you attempt to return a laptop in order to obtain a Return Material Authorization Number for you to include with your return. You must return the laptop to us in its original packaging and condition with all included manuals, discs, accessories etc.


Do you offer any military or student discounts?

We don’t offer any military or student discounts at this time.


How much is shipping and tax to my state or country?

Shipping costs are determined by cost of notebook and location. Please add a notebook to the cart and then click the, “Estimated Shipping Charges,” link at the bottom of the cart page. Within the US, there are no taxes outside of Nevada. Nevada residents are subject to 8.10% sales tax. For customers outside the US, you will have to pay your local VAT (Value Added Tax) to customs once the notebook arrives in your country.


When is my order shipping?

Laptops usually ship out within 5-7 business days after the order is placed. We also offer rush service (1-3 business days) for $50. Once your laptop ships out we will email the tracking number so that you can see the estimated arrival date. Someone will need to be at the address to sign for the package.


How do I check the status of my order?

We will send you emails and texts with status updates as your order progresses through the different stages.


How do I cancel an order?

You may cancel an order any time up until it ships. After it ships, you will not be able to cancel it, but will instead have to use our return policy in order to return the laptop for a refund. To cancel an order, simply open a sales ticket or sales chat and give the representative your order information, and they will cancel the order for you and send you confirmation via email and text.


How do I make a change to my order?

You may make changes to your order up until it ships. To modify an order, simply open a sales ticket or sales chat and give the representative your order information and specify which changes you want to make. Please note: You cannot change the shipping address on an order.


Do you price match?

We do not currently offer any price matching.


How do I track my order after it ships?

You can view your tracking status via the order page in your account.



MALIBAL is an innovative technology company that produces high-performance, custom linux laptops for developers and content creators; mobile workstations for engineers, scientists, video editors, 3D modelers, and animators; and mobile servers for enterprise applications.

On our site, you will find information about the best custom linux laptops, such as our Aon S1 and Aon L1 models, our customers, new articles, latest news, guides, features, and more.