In apache status page into WHM there is a line showing cpu usage. This line looks like this.
CPU Usage: u133.74 s28.94 cu0 cs0 - .0108% CPU load
what do the terms (u,s,cu,cs) mean?
This is answered in a serverfault questions:
u=user, s=system... cu and cs are the cumulative values of u and s
Original answer found at: https://serverfault.com/questions/225913/explain-apache-status