MySQL 5.7 Reference Manual Including MySQL NDB Cluster 7.5 and NDB Cluster 7.6

Chapter 24 MySQL Performance Schema

The MySQL Performance Schema is a feature for monitoring MySQL Server execution at a low level. The Performance Schema has these characteristics:

The Performance Schema is intended to provide access to useful information about server execution while having minimal impact on server performance. The implementation follows these design goals:

Note

The MySQL sys schema is a set of objects that provides convenient access to data collected by the Performance Schema. The sys schema is installed by default. For usage instructions, see Chapter 25, MySQL sys Schema.