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1f51d6c0f6
- Added missing information about database of corresponding table for various types of commands - Update some typos - Reviewed by: <vicentiu@mariadb.org>
58 lines
3.6 KiB
Plaintext
58 lines
3.6 KiB
Plaintext
select * from performance_schema.socket_summary_by_instance
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limit 1;
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select * from performance_schema.socket_summary_by_instance
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where object_instance_begin='FOO';
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insert into performance_schema.socket_summary_by_instance
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set object_instance_begin=1,
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count_star=1, sum_timer_wait=2, min_timer_wait=3,
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avg_timer_wait=4, max_timer_wait=5;
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ERROR 42000: INSERT command denied to user 'root'@'localhost' for table `performance_schema`.`socket_summary_by_instance`
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update performance_schema.socket_summary_by_instance
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set count_star=12;
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ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table `performance_schema`.`socket_summary_by_instance`
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update performance_schema.socket_summary_by_instance
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set count_star=12 where object_instance_begin like "FOO";
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ERROR 42000: UPDATE command denied to user 'root'@'localhost' for table `performance_schema`.`socket_summary_by_instance`
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delete from performance_schema.socket_summary_by_instance
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where count_star=1;
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ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`socket_summary_by_instance`
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delete from performance_schema.socket_summary_by_instance;
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ERROR 42000: DELETE command denied to user 'root'@'localhost' for table `performance_schema`.`socket_summary_by_instance`
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LOCK TABLES performance_schema.socket_summary_by_instance READ;
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ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table `performance_schema`.`socket_summary_by_instance`
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UNLOCK TABLES;
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LOCK TABLES performance_schema.socket_summary_by_instance WRITE;
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ERROR 42000: SELECT, LOCK TABLES command denied to user 'root'@'localhost' for table `performance_schema`.`socket_summary_by_instance`
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UNLOCK TABLES;
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#
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# MDEV-25325 column_comment for performance_schema tables
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#
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select column_name, column_comment
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from information_schema.columns
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where table_schema='performance_schema' and table_name='socket_summary_by_instance';
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column_name column_comment
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EVENT_NAME Socket instrument.
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OBJECT_INSTANCE_BEGIN Address in memory.
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COUNT_STAR Number of summarized events
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SUM_TIMER_WAIT Total wait time of the summarized events that are timed.
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MIN_TIMER_WAIT Minimum wait time of the summarized events that are timed.
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AVG_TIMER_WAIT Average wait time of the summarized events that are timed.
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MAX_TIMER_WAIT Maximum wait time of the summarized events that are timed.
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COUNT_READ Number of all read operations, including RECV, RECVFROM, and RECVMSG.
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SUM_TIMER_READ Total wait time of all read operations that are timed.
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MIN_TIMER_READ Minimum wait time of all read operations that are timed.
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AVG_TIMER_READ Average wait time of all read operations that are timed.
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MAX_TIMER_READ Maximum wait time of all read operations that are timed.
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SUM_NUMBER_OF_BYTES_READ Bytes read by read operations.
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COUNT_WRITE Number of all write operations, including SEND, SENDTO, and SENDMSG.
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SUM_TIMER_WRITE Total wait time of all write operations that are timed.
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MIN_TIMER_WRITE Minimum wait time of all write operations that are timed.
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AVG_TIMER_WRITE Average wait time of all write operations that are timed.
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MAX_TIMER_WRITE Maximum wait time of all write operations that are timed.
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SUM_NUMBER_OF_BYTES_WRITE Bytes written by write operations.
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COUNT_MISC Number of all miscellaneous operations not counted above, including CONNECT, LISTEN, ACCEPT, CLOSE, and SHUTDOWN.
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SUM_TIMER_MISC Total wait time of all miscellaneous operations that are timed.
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MIN_TIMER_MISC Minimum wait time of all miscellaneous operations that are timed.
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AVG_TIMER_MISC Average wait time of all miscellaneous operations that are timed.
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MAX_TIMER_MISC Maximum wait time of all miscellaneous operations that are timed.
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