The chart above shows the WLS servers processing the HTTP traffic for a 105 user load test, NO delay.
The chart above shows with https enabled on
Seems that there is 0 difference in the CPU profile, so stop worrying….
Let me explain those graphs. The top two lines are two elastic load balanced JDE application servers. They are working hard because the each have about 53 users pounding the keyboard (actually virtual users with 0 delay). The lower two lines are JDE web servers, we are hardly touching the sides. If you are interested, these are all m3.xlarge machines.