TOP command difference between cpu(s) and %CPU
Explanation:
Cpu(s): 34.0% us: User space occupied CPU percentage
%CPU: percentage of CPU time spent last updated to the present time
First look at the TOP command, you will find that the CPU(s) usage is only 15.5%, and a process %CPU reaches 278%.
Next, press 1 to see that the CPU(s) is the average value of the entire CPU occupied by all user processes of the system. Since the percentage occupied by each core is different, it is more meaningful to calculate by average.
%CPU shows the percentage of the process occupying a core, not the percentage of the entire cpu (8 cores), sometimes more than 100, because the process enables multithreading to occupy multiple cores, so sometimes we look at It is worth more than 100%, but it will not exceed the total number of cores *100.
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