I am trying to compare the differences between 2 mysql percona instances and noticed 2 differences being reported by pt-mysql-summary:
Explicit LOCK TABLES
Fast Hash UDFs
What I would like to understand is what configuration determines whether these are enabled or not? Also, are there any resources that I’m missing for better understanding the output from pt-mysql-summary? I did come across: pt-mysql-summary — Percona Toolkit Documentation but that doesn’t really go into detail for each line item.