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The output of your command "$ mpstat 1 3" is:

Linux 6.8.0-62-generic (mywebtutorial) 	12/21/25 	_x86_64_	(8 CPU)

18:36:09     CPU    %usr   %nice    %sys %iowait    %irq   %soft  %steal  %guest  %gnice   %idle
18:36:10     all    0.25    0.00    0.13    0.00    0.00    0.25    0.00    0.00    0.00   99.37
18:36:11     all    0.00    0.00    0.10    0.10    0.00    0.29    0.00    0.00    0.00   99.52
18:36:12     all    0.00    0.00    0.12    0.12    0.00    0.00    0.00    0.00    0.00   99.76
Average:     all    0.08    0.00    0.11    0.08    0.00    0.19    0.00    0.00    0.00   99.55