This is part of the Semicolon&Sons Code Diary - consisting of lessons learned on the job. You're in the unix category.
Last Updated: 2024-11-21
I was putting an artificial load on my "docnotes" server by means of an infinite loop:
while : ; do : ; done
In monit (a tool for monitoring servers), I saw data like the following:
0.1%us, 0.2%sy, 0.0%wa
What does these outputs mean?
us - percentage of CPU used in user spacesy - percentage of CPU used in kernelwa - percentage of CPU used in waiting for IO peripherals (e.g. disk)