{"id":1207,"date":"2019-08-09T23:05:21","date_gmt":"2019-08-09T20:05:21","guid":{"rendered":"https:\/\/galaxydata.ru\/community\/?p=1207"},"modified":"2025-07-22T20:31:49","modified_gmt":"2025-07-22T17:31:49","slug":"stress-ng-test-virtual-machines","status":"publish","type":"post","link":"https:\/\/galaxydata.ru\/community\/stress-ng-test-virtual-machines-1207","title":{"rendered":"stress-ng test virtual machines"},"content":{"rendered":"
yum install stress-ng\n<\/pre>\n
start test<\/p>\n
stress-ng --cpu 1 --io 2 --vm 5 --vm-bytes 1G --metrics-brief<\/pre>\n
Stress-NG is a tool designed to stress test various components of the system, including CPU, memory, I\/O, and file systems. It can be used in both physical servers and virtual machines to evaluate their performance under different workloads. This guide will walk you through setting up and running Stress-NG tests on virtual machines.<\/span><\/p>\n
Prerequisites<\/span><\/h4>\n
Before starting with Stress-NG testing, ensure that your virtual machine meets the following requirements:<\/span><\/p>\n
    \n
  • OS<\/strong>: Linux-based operating system (Ubuntu, CentOS, etc.)<\/span><\/li>\n
  • Hardware<\/strong>: Adequate resources allocated to the VM (CPU cores, RAM)<\/span><\/li>\n
  • Network<\/strong>: Proper network configuration if needed<\/span><\/li>\n<\/ul>\n
    Installation<\/span><\/h4>\n
    To install Stress-NG on Ubuntu or Debian-based distributions, use the following command:<\/span>sudo apt-get update<\/span>sudo apt-get install stress-ng<\/span><\/p>\n
    For Red Hat Enterprise Linux (RHEL), CentOS, or Fedora, run:<\/span>sudo yum install epel-release<\/span>sudo yum install stress-ng<\/span><\/p>\n
    Basic Usage<\/span><\/h4>\n
    Once installed, you can start using Stress-NG by specifying the type of stress test and its parameters. Here are some common examples:<\/span><\/p>\n
    Stress CPU<\/span><\/strong>Run multiple CPU-intensive tasks simultaneously:<\/span>stress-ng —cpu 8 —timeout 60s<\/span><\/p>\n
    This command runs 8 CPU stressors for 60 seconds.<\/span><\/p>\n
    Stress Memory<\/span><\/strong>Allocate large amounts of memory and perform operations on it:<\/span>stress-ng —vm 4 —vm-bytes 1G —timeout 60s<\/span><\/p>\n
    Here, 4 VMs each allocate 1GB of memory and operate on them for 60 seconds.<\/span><\/p>\n
    Stress Disk I\/O<\/span><\/strong>Perform intensive disk input\/output operations:<\/span>stress-ng —hdd 4 —hdd-bytes 1G —timeout 60s<\/span><\/p>\n
    This creates 4 hard drive stressors writing 1GB of data each within 60 seconds.<\/span><\/p>\n
    Advanced Testing Scenarios<\/span><\/h4>\n
    You can combine multiple types of stress tests into one command. For example:<\/span>stress-ng —cpu 4 —vm 2 —hdd 2 —io 2 —timeout 60s<\/span><\/p>\n
    This runs four CPU stressors, two memory stressors, two hard drive stressors, and two I\/O stressors concurrently for 60 seconds.<\/span><\/p>\n
    Monitoring Performance<\/span><\/h4>\n
    While running Stress-NG, it’s essential to monitor the system’s performance. You can use tools like <\/span>top<\/code><\/span>, <\/span>htop<\/code><\/span>, or <\/span>vmstat<\/code><\/span> to observe resource utilization.<\/span><\/p>\n
    Example commands:<\/span><\/p>\n
      \n
    • Top<\/strong>: Displays real-time process information.<\/span><\/li>\n<\/ul>\n