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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.user;
optimize table mysql.db;
optimize table mysql.proxies_priv;
optimize table mysql.roles_mapping;
optimize table mysql.tables_priv;
optimize table mysql.procs_priv;
optimize table mysql.servers;
optimize table mysql.roles_mapping;
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 where
`Variable_name` != "performance_schema_max_statement_classes" and
`Variable_name` 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_digest_length 1024
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 40
performance_schema_max_rwlock_instances 5000
performance_schema_max_socket_classes 10
performance_schema_max_socket_instances 1000
performance_schema_max_stage_classes 160
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 roles_mapping 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 mysql table_stats fetch NULL
wait/io/table/sql/handler handler.cc: TABLE mysql column_stats 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 where Variable_name like 'performance_schema_%' and
Variable_name not like 'performance_schema_%_classes_lost';
Variable_name Value
Performance_schema_accounts_lost 0
Performance_schema_cond_instances_lost 0
Performance_schema_digest_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_instances_lost 0
Performance_schema_rwlock_instances_lost 0
Performance_schema_session_connect_attrs_lost 0
Performance_schema_socket_instances_lost 0
Performance_schema_table_handles_lost 0
Performance_schema_table_instances_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';
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