To spawn N workers spinning on write()/unlink() functions, use the –hdd N option.

Set sleep to N seconds before freeing memory by using the –vm-hang N option.

Instead of freeing and reallocating memory resources, you can redirty memory by using the –vm-keep option.

To allocate memory per vm worker, use the –vm-bytes N option.

To spawn N workers spinning on malloc()/free() functions, use the –vm N option.

To spawn N workers spinning on sync() function, use the –io N option as follows.

To spawn N workers spinning on sqrt() function, use the –cpu N option as follows.

Some options that you can use with stress. The general syntax for using stress is: $ sudo stress option argument To install stress on a RHEL/ CentOS and Fedora Linux, you need to turn on EPEL repository and then type the following yum command to install the same: # yum install stress To install stress tool on Debian and its derivatives such Ubuntu and Mint, run the following command. Important: It is highly recommended that you use these tools with root user privileges, because they can stress your Linux machine so fast and to avoid certain system errors on poorly designed hardware. Though these tools are good for examining your system, they should not just be used by any system user. stress-ng – is an updated version of the stress workload generator tool which tests your system for following features: stress – is a workload generator tool designed to subject your system to a configurable measure of CPU, memory, I/O and disk stress.Ģ. In this guide, we shall look at two important tools, stress and stress-ng for stress testing under your Linux systems.ġ. Linux CPU Load Stress Test with Stress-ng Tool

measure different power consuming loads on a system.

test your Linux hardware components such as CPU, memory, disk devices and many others to observe their performance under stress.

monitor operating system kernel interfaces.

This can be a good way for System Administrators and Programmers to: As a System Administrator, you may want to examine and monitor the status of your Linux systems when they are under stress of high load.

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