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c9f612dbde
This was done to get more information about where time is spent. Now we can get proper timing for time spent in commit, rollback, binlog write etc. Following stages was added: - Commit - Commit_implicit - Rollback - Rollback implicit - Binlog write - Init for update - This is used instead of "Init" for insert, update and delete. - Staring cleanup Following stages where changed: - "Unlocking tables" stage reset stage to previous stage at end - "binlog write" stage resets stage to previous stage at end - "end" -> "end of update loop" - "cleaning up" -> "Reset for next command" - Added stage_searching_rows_for_update when searching for rows to be deleted. Other things: - Renamed all stages to start with big letter (before there was no consitency) - Increased performance_schema_max_stage_classes from 150 to 160. - Most of the test changes in performance schema comes from renaming of stages. - Removed duplicate output of variables and inital state in a lot of performance schema tests. This was done to make it easier to change a default value for a performance variable without affecting all tests. - Added start_server_variables.test to check configuration - Removed some duplicate "closing tables" stages - Updated position for "stage_init_update" and "stage_updating" for delete, insert and update to be just before update loop (for more exact timing). - Don't set "Checking permissions" twice in a row. - Remove stage_end stage from creating views (not done for create table either). - Updated default performance history size from 10 to 20 because of new stages - Ensure that ps_enabled is correct (to be used in a later patch)
77 lines
2.7 KiB
Plaintext
77 lines
2.7 KiB
Plaintext
show databases;
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Database
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information_schema
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mtr
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mysql
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performance_schema
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test
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select count(*) from performance_schema.performance_timers;
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count(*)
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0
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select count(*) from performance_schema.setup_consumers;
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count(*)
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0
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select count(*) > 3 from performance_schema.setup_instruments;
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count(*) > 3
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0
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select count(*) from performance_schema.setup_timers;
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count(*)
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0
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show engine PERFORMANCE_SCHEMA status;
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show status like "performance_schema%";
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show status like "performance_schema%";
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Variable_name Value
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Performance_schema_accounts_lost 0
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Performance_schema_cond_classes_lost 0
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Performance_schema_cond_instances_lost 0
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Performance_schema_digest_lost 0
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Performance_schema_file_classes_lost 0
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Performance_schema_file_handles_lost 0
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Performance_schema_file_instances_lost 0
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Performance_schema_hosts_lost 0
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Performance_schema_locker_lost 0
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Performance_schema_mutex_classes_lost 0
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Performance_schema_mutex_instances_lost 0
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Performance_schema_rwlock_classes_lost 0
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Performance_schema_rwlock_instances_lost 0
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Performance_schema_session_connect_attrs_lost 0
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Performance_schema_socket_classes_lost 0
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Performance_schema_socket_instances_lost 0
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Performance_schema_stage_classes_lost 0
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Performance_schema_statement_classes_lost 0
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Performance_schema_table_handles_lost 0
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Performance_schema_table_instances_lost 0
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Performance_schema_thread_classes_lost 0
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Performance_schema_thread_instances_lost 0
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Performance_schema_users_lost 0
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show variables like "performance_schema";
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Variable_name Value
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performance_schema OFF
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select * from performance_schema.setup_consumers;
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NAME ENABLED
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select * from performance_schema.setup_instruments;
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NAME ENABLED TIMED
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select * from performance_schema.setup_actors;
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HOST USER ROLE
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select * from performance_schema.setup_objects;
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OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME ENABLED TIMED
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select * from performance_schema.setup_timers;
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NAME TIMER_NAME
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insert into performance_schema.setup_objects values ('TABLE', 'myschema', 'myobject', 'YES', 'YES');
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ERROR HY000: Invalid performance_schema usage
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insert into performance_schema.setup_actors values ('myhost', 'mysuser', 'myrole');
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ERROR HY000: Invalid performance_schema usage
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select * from performance_schema.setup_objects;
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OBJECT_TYPE OBJECT_SCHEMA OBJECT_NAME ENABLED TIMED
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update performance_schema.setup_objects set OBJECT_NAME = 'myobject';
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delete from performance_schema.setup_objects;
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select * from performance_schema.setup_actors;
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HOST USER ROLE
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update performance_schema.setup_actors set HOST = 'myhost';
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delete from performance_schema.setup_actors;
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truncate performance_schema.events_stages_history_long;
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truncate performance_schema.events_statements_history_long;
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truncate performance_schema.events_waits_history_long;
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truncate performance_schema.setup_objects;
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truncate performance_schema.setup_actors;
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