Linux Understanding "top" output

As explained in these links:

• http://unix.stackexchange.com/questions/18918/in-linux-top-command-what-are-us-sy-ni-id-wa-hi-si-and-st-for-cpu-usage
• http://www.linuxquestions.org/questions/linux-general-1/top-command-details-599224/

Explanations can also be found in:

• man vmstat
• man mpstat