drop table if exists test.marker; create table test.marker(a int); update performance_schema.setup_consumers set enabled='NO'; update performance_schema.setup_instruments set enabled='NO'; update performance_schema.setup_instruments set enabled='YES' where name like "wait/io/table/%"; truncate table performance_schema.events_waits_history_long; flush status; flush tables; # We are forced to suppress here the server response. optimize table mysql.host; optimize table mysql.user; optimize table mysql.db; optimize table mysql.proxies_priv; optimize table mysql.tables_priv; optimize table mysql.procs_priv; optimize table mysql.servers; update performance_schema.setup_consumers set enabled='YES'; update performance_schema.setup_objects set enabled='YES' where object_type='TABLE' and object_schema= 'mysql'; flush privileges; insert into test.marker set a = 1; insert into test.marker set a = 1; insert into test.marker set a = 1; show variables like "performance_schema%"; Variable_name Value performance_schema ON performance_schema_accounts_size 100 performance_schema_digests_size 200 performance_schema_events_stages_history_long_size 1000 performance_schema_events_stages_history_size 10 performance_schema_events_statements_history_long_size 1000 performance_schema_events_statements_history_size 10 performance_schema_events_waits_history_long_size 10000 performance_schema_events_waits_history_size 10 performance_schema_hosts_size 100 performance_schema_max_cond_classes 80 performance_schema_max_cond_instances 1000 performance_schema_max_file_classes 50 performance_schema_max_file_handles 32768 performance_schema_max_file_instances 10000 performance_schema_max_mutex_classes 200 performance_schema_max_mutex_instances 5000 performance_schema_max_rwlock_classes 30 performance_schema_max_rwlock_instances 5000 performance_schema_max_socket_classes 10 performance_schema_max_socket_instances 1000 performance_schema_max_stage_classes 150 performance_schema_max_statement_classes 167 performance_schema_max_table_handles 1000 performance_schema_max_table_instances 500 performance_schema_max_thread_classes 50 performance_schema_max_thread_instances 200 performance_schema_session_connect_attrs_size 2048 performance_schema_setup_actors_size 100 performance_schema_setup_objects_size 100 performance_schema_users_size 100 show status like "performance_schema%"; Variable_name Value Performance_schema_accounts_lost 0 Performance_schema_cond_classes_lost 0 Performance_schema_cond_instances_lost 0 Performance_schema_digest_lost 0 Performance_schema_file_classes_lost 0 Performance_schema_file_handles_lost 0 Performance_schema_file_instances_lost 0 Performance_schema_hosts_lost 0 Performance_schema_locker_lost 0 Performance_schema_mutex_classes_lost 0 Performance_schema_mutex_instances_lost 0 Performance_schema_rwlock_classes_lost 0 Performance_schema_rwlock_instances_lost 0 Performance_schema_session_connect_attrs_lost 0 Performance_schema_socket_classes_lost 0 Performance_schema_socket_instances_lost 0 Performance_schema_stage_classes_lost 0 Performance_schema_statement_classes_lost 0 Performance_schema_table_handles_lost 0 Performance_schema_table_instances_lost 0 Performance_schema_thread_classes_lost 0 Performance_schema_thread_instances_lost 0 Performance_schema_users_lost 0 update performance_schema.setup_consumers set enabled='NO'; select event_name, left(source, locate(":", source)) as short_source, object_type, object_schema, if (locate("#sql-", object_name), "#sql-XXXX", object_name) as pretty_name, operation, number_of_bytes from performance_schema.events_waits_history_long where event_name like 'wait/io/table/%' and object_schema in ("test", "mysql") order by thread_id, event_id; event_name short_source object_type object_schema pretty_name operation number_of_bytes wait/io/table/sql/handler handler.cc: TABLE mysql user fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql user fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql user fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql user fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql user fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql db fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql db fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql db fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql proxies_priv fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql proxies_priv fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql proxies_priv fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql tables_priv fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql procs_priv fetch NULL wait/io/table/sql/handler handler.cc: TABLE mysql servers fetch NULL wait/io/table/sql/handler handler.cc: TABLE test marker insert NULL wait/io/table/sql/handler handler.cc: TABLE test marker insert NULL wait/io/table/sql/handler handler.cc: TABLE test marker insert NULL show status like 'performance_schema_%'; Variable_name Value Performance_schema_accounts_lost 0 Performance_schema_cond_classes_lost 0 Performance_schema_cond_instances_lost 0 Performance_schema_digest_lost 0 Performance_schema_file_classes_lost 0 Performance_schema_file_handles_lost 0 Performance_schema_file_instances_lost 0 Performance_schema_hosts_lost 0 Performance_schema_locker_lost 0 Performance_schema_mutex_classes_lost 0 Performance_schema_mutex_instances_lost 0 Performance_schema_rwlock_classes_lost 0 Performance_schema_rwlock_instances_lost 0 Performance_schema_session_connect_attrs_lost 0 Performance_schema_socket_classes_lost 0 Performance_schema_socket_instances_lost 0 Performance_schema_stage_classes_lost 0 Performance_schema_statement_classes_lost 0 Performance_schema_table_handles_lost 0 Performance_schema_table_instances_lost 0 Performance_schema_thread_classes_lost 0 Performance_schema_thread_instances_lost 0 Performance_schema_users_lost 0 truncate performance_schema.events_waits_history_long; flush status; update performance_schema.setup_consumers set enabled='NO'; truncate performance_schema.events_waits_history_long; drop table test.marker; flush status; update performance_schema.setup_instruments set enabled='YES'; update performance_schema.setup_consumers set enabled='YES'; update performance_schema.setup_objects set enabled='NO' where object_type='TABLE' and object_schema= 'mysql';