Visibility is a blessing, and with databases, visibility is a must. That’s true not only for metrics but for the queries themselves. Having info on all the stats around query execution is priceless, and Percona Monitoring and Management (PMM) offers that in the form of the Query Analytics dashboard (QAN). But where to start? QAN [&]

https://www.percona.com/blog/2020/10/07/how-to-find-query-slowdowns-using-percona-monitoring-and-management/