How do top command report CPU time?

Solution Verified - Updated -

Issue

  • How do the top report CPU time?
  • Since 4 CPUs now and each can reach 100%, is it safe to say that the server will only consider peak when this number reaches 400%? it is very common to notice the %CPU to shoot above 150-200%. Why top shows cpu usage above 100% ?

Environment

  • Red Hat Enterprise Linux
  • procps
    • top

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