Thanks guys for the answers
Mikhail, our goal is indeed to understand how often and what type of search the users perform as we have no metrics whatsoever
Our fear was indeed that this trace would affect performance but if it only affect performance on TREX searches and nothing else, I believe we can accept the risk as we believe that a very limited set of users use TREX sporadically. Do you happen to know if this trace will affect the overall performance of the system?
Thanks,
Miguel