Liangxu Linux
Mar 20, 2023 · Fundamentals
How Linux Calculates CPU Utilization for top – Inside /proc/stat and Kernel Timers
This article explains how Linux computes CPU utilization shown by the top command, detailing the role of /proc/stat, kernel_cpustat, timer interrupts, sampling intervals, and how user, nice, system, irq, softirq, iowait, and idle times are accumulated and reported.
Linuxcpu-utilizationkernel
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