FAQ: What does CPU utilization greater than 100% indicate?
At times while executing runs you might observe CPU utilization in excess of 100%.
Domino measures CPU usage as a percentage of single core utilization. Therefore a machine with multiple cores can regularly utilize greater than 100% of a single processing core's maximum frequency.
For instance a m4.xlarge EC2 machine in AWS has 4 CPU cores and would show a maximum utilization of 400%.