Stress: Linux Stress Testing Tool

💡 This page summarizes how to install and use stress , plus common parameters and practical examples. It is meant as a quick reference for performance testing and bottleneck investigation. Part 1: Overview Basic Info Tool name : stress What it is : a Linux command-line stress testing tool that simulates high load by spawning worker processes. What it can stress : CPU, memory (VM), disk I/O, and mixed workloads. Source : CSDN: stress usage guide Official docs and resources Official documentation : (to be added) GitHub repository : (to be added) Part 2: How it works Key features CPU stress : spawn compute-heavy workers. Memory stress : allocate, touch, and optionally keep memory. I/O stress : call sync() to generate disk I/O pressure. Mixed stress : combine CPU + memory + I/O to approximate real high-load scenarios. Typical use cases: Validating system stability under pressure Comparing performance before and after tuning Finding resource bottlenecks with monitoring tools ( top , iostat