Performance Schema

Performance Schema. The Performance Schema includes several new features:
• Instrumentation for table input and output. Instrumented operations include row-level accesses to
persistent base tables or temporary tables. Operations that affect rows are fetch, insert, update,
and delete.
• Event filtering by table, based on schema and/or table names.
• Event filtering by thread. More information is collected for threads.
• Summary tables for table and index I/O, and for table locks.
• Instrumentation for statements and stages within statements.
• Configuration of instruments and consumers at server startup, which previously was possible only
at runtime.
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