metrics: event time in userspace pipeline #3844
Description
Feature
A useful metrics for current performance testing and the future PR gate is the time an event spends being processed in the kernel and userspace.
Requirements
A wrapper for the pipeline object needs to be added. This is so we don't append the userpsace intiial time in the event object itself.
User Time measurement
Subtract the measured time at the end of the pipeline from the start time in the metadata.