OTN appreciation day: The Performance Schema of MySQL 5.6+

To focus on just one point for OTN appreciation day on October 11 2016 and to the benefit of all users of MySQL is to consider the extremely convenient and rich value of information available in the MySQL Performance Schema to understand what SQL queries are running in a MySQL instance now. The MySQL Performance Schema in MySQL 5.6 is enabled by default, (performance_schema=on).

The following one off SQL statement will enable the instrumentation of SQL statements in the most detailed level of assessment.

The following query will show you the longest running queries in your database at this present time.

This ease of accessing what is running in a MySQL instance replaces many different and creative techniques as I describe in Improving MySQL Performance with Better Indexes in versions of MySQL before version 5.6.

If your organization does not have dedicated performance experts reviewing new functionality consistently and monitoring your production systems regularly for database optimization, the cost of having the MySQL performance schema available and with a large number of different forms of instrumentation out ways any reason not to.

One of the best presentations at Percona Live Amsterdam last week in the last time slot of the event (before beer and food) was Performance schema and sys schema by Mark Leith . I hope to provide a review of this presentation soon and my interest to explore the new MySQL 5.7 and 8.0 performance schema instruments. A few of my live tweets included:

MySQL 5.7 & 8.0 Performance Schema

Tagged with: MySQL

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