VM Stress Test Steps

Production Stress Test Documentation

This guide provides instructions for installing and running stress tests on AlmaLinux/Rocky Linux and Ubuntu systems using stress-ng.

1. Install Stress Tools On Alma/Rocky Linux

Run the following commands to install the necessary tools:

sudo dnf install epel-release -y
sudo dnf install stress-ng -y
sudo dnf install tmux -y

2. Run a Stress Test (20 Hours)

Use the following command to run a stress test for 20 hours:

stress-ng --cpu 0 --io 4 --vm 2 --vm-bytes 1G --hdd 1 --timeout 20h --metrics-brief

🔍 What this does

• --cpu 0: Stresses all available CPU cores.
• --io 4: Starts 4 I/O workers to create heavy I/O pressure.
• --vm 2: Starts 2 memory workers.
• --vm-bytes 1G: Allocates 1GB of RAM per vm worker (Total: 2GB).
• --hdd 1: Starts 1 HDD worker (includes disk stress, safe temp files).
• --timeout 20h: Runs the test for 20 hours.
• --metrics-brief: Outputs a clean performance summary after completion.

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3. Install Stress Tools On Ubuntu

Run the following command to install stress-ng:

sudo apt install stress-ng -y

4. Run a High-Load Stress Test

This command configures a specific high-load scenario (30 cores, 30GB RAM, 20 Hours):

stress-ng \
  --cpu 30 \
  --vm 30 \
  --vm-bytes 1G \
  --io 8 \
  --hdd 2 \
  --timeout 20h \
  --metrics-brief

🔍 Breakdown

• --cpu 30: Stresses 30 CPU cores.
• --vm 30: Starts 30 memory workers.
• --vm-bytes 1G: Allocates 1GB RAM per worker (Total: 30GB).
• --io 8: Starts 8 I/O workers.
• --hdd 2: Starts 2 HDD workers.
• --timeout 20h: Runs for 20 hours.
• --metrics-brief: Shows a brief summary of metrics.