The article explores CPU consumption metrics in Unix/Linux systems, detailing eight metrics: User CPU time, System CPU time, nice CPU time, Idle CPU time, Waiting CPU time, Hardware Interrupt CPU time, Software Interrupt CPU time, and Stolen CPU time. Each metric highlights the CPU's time allocation for various processes, providing essential insights for performance optimization.
The article discusses System CPU Time in Unix/Linux, explaining its relation to User CPU Time. It describes how System CPU Time measures processor time spent on operating system functions necessary for application operations, such as network calls. Tools like yCrash and the 'top' command can monitor System CPU Time, and simulations for high consumption are demonstrated using BuggyApp. Solutions for excessive System CPU Time include restarting processes and ensuring updated OS versions.
