How to Test CPU and Memory Load with Stress & Stress-ng
In this article, I’ll install Stress on Linux machine and test CPU and memory load with Stress. Let’s get started:
Table of Contents
Run this command to install Stress-ng (updated version of Stress):
# CentOS/RHEL 8 sudo dnf install stress-ng -y # CentOS/REHL 7/Amazon Linux sudo yum install stress-ng -y # Debian/Ubuntu sudo apt install stress-ng -y
Run this command to install Stress on your machine:
# CentOS/RHEL 8 sudo dnf install stress -y # CentOS/REHL 7/Amazon Linux sudo yum install stress -y # Debian/Ubuntu sudo apt install stress -y
Now run this command to see all available options:
stress-ng --help # stress stress --help
Stress using CPU-bound task:
stress-ng --cpu 4 -t 30s # with stress stress --cpu 4 -t 30s #or stress -c 4 -t 30s
Stress using IO-bound task:
stress-ng -i 4 -t 60s # with stress stress -i 4 -t 60s
We can run all of these tests in parallel by running the command below:
stress-ng --cpu 2 --all -t 120s
Give load using two CPU-bound processes, one I/O-bound process, and one memory allocator:
stress-ng -c 2 -i 1 -m 1 --vm-bytes 128M -t 20s
Watch Load Average
We can see the avegare load using these commands:
uptime # or watch uptime # or top
htop is another awesome tool to monitor loads:
# install htop sudo yum install htop -y # CentOS/RHEL sudo apt install htop -y # Debian/Ubuntu # then run htop
If you run stress for a long time, you should reboot the system before making it live.
That’s all. Thank you. ?
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