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The maximum number of instrumented mutex objects. For information about how to set and use this variable, see Section 27.7, “Performance Schema Status Monitoring” . 

• performance_schema_max_prepared_statements_instances 

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The maximum number of rows in the prepared_statements_instances  table. If this maximum is exceeded such that a prepared statement cannot be instrumented, the Performance Schema increments the Performance_schema_prepared_statements_lost  status variable. For information about how to set and use this variable, see Section 27.7, “Performance Schema Status Monitoring” . 

The default value of this variable is autosized based on the value of the max_prepared_stmt_count system variable. 

• performance_schema_max_rwlock_classes 

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The maximum number of rwlock instruments. For information about how to set and use this variable, see Section 27.7, “Performance Schema Status Monitoring” . 

• performance_schema_max_program_instances 

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